<P> Lab Rats, also known as Lab Rats: Bionic Island for the fourth season, is an American television sitcom that premiered on February 27, 2012, on Disney XD . It focuses on the life of teenager Leo Dooley, whose mother, Tasha, marries billionaire genius Donald Davenport . He meets Adam, Bree, and Chase, three bionic superhumans, with whom he develops an immediate friendship . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 20 </Td> <Td_colspan="1"> February 27, 2012 (2012 - 02 - 27) </Td> <Td> November 5, 2012 (2012 - 11 - 05) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 25 </Td> <Td_colspan="1"> February 25, 2013 (2013 - 02 - 25) </Td> <Td> January 13, 2014 (2014 - 01 - 13) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 23 </Td> <Td_colspan="1"> February 17, 2014 (2014 - 02 - 17) </Td> <Td> February 5, 2015 (2015 - 02 - 05) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> March 18, 2015 (2015 - 03 - 18) </Td> <Td> February 3, 2016 (2016 - 02 - 03) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many seasons of lab rats are there
find me the text answering this question