<P> More than 200 Upanishads are known, of which the first dozen or so are the oldest and most important and are referred to as the principal or main (mukhya) Upanishads . The mukhya Upanishads are found mostly in the concluding part of the Brahmanas and Aranyakas and were, for centuries, memorized by each generation and passed down verbally . The early Upanishads all predate the Common Era, some in all likelihood pre-Buddhist (6th century BCE), down to the Maurya period . Of the remainder, some 95 Upanishads are part of the Muktika canon, composed from about the start of common era through medieval Hinduism . New Upanishads, beyond the 108 in the Muktika canon, continued being composed through the early modern and modern era, though often dealing with subjects unconnected to Hinduism . </P> <P> The Puranas are a vast genre of Hindu texts that encyclopedically cover a wide range of topics, particularly myths, legends and other traditional lore . Composed primarily in Sanskrit, but also in regional languages, several of these texts are named after major Hindu deities such as Lord Vishnu, Lord Shiva and Goddess Devi . The Puranas genre of literature is found in both Hinduism and Jainism . </P> <P> The Puranic literature is encyclopedic, and it includes diverse topics such as cosmogony, cosmology, genealogies of gods, goddesses, kings, heroes, sages, and demigods, folk tales, pilgrimages, temples, medicine, astronomy, grammar, mineralogy, humor, love stories, as well as theology and philosophy . The content is highly inconsistent across the Puranas, and each Purana has survived in numerous manuscripts which are themselves inconsistent . The Hindu Puranas are anonymous texts and likely the work of many authors over the centuries; in contrast, most Jaina Puranas can be dated and their authors assigned . </P> <P> There are 18 Maha Puranas (Great Puranas) and 18 Upa Puranas (Minor Puranas), with over 400,000 verses . The Puranas do not enjoy the authority of a scripture in Hinduism, but are considered a Smriti . These Hindu texts have been influential in the Hindu culture, inspiring major national and regional annual festivals of Hinduism . The Bhagavata Purana has been among the most celebrated and popular text in the Puranic genre . </P>

Which of the following contains the oldest religious texts in india ​