<Li> Sepia, from the ink produced by the cuttlefish, usually for an escape mechanism; and </Li> <Li> Iron gall ink, where in medieval times iron nails would be boiled in vinegar; the resulting compound would then be mixed with an extract of oak apple (oak galls). </Li> <Tr> <Th> Gold </Th> <Td> <Ul> <Li> Gold leaf, gold hammered extremely thin, or gold powder, bound in gum arabic or egg; the latter is called shell gold . </Li> </Ul> </Td> </Tr> <Ul> <Li> Gold leaf, gold hammered extremely thin, or gold powder, bound in gum arabic or egg; the latter is called shell gold . </Li> </Ul>

Which statements about celtic illuminated manuscripts are true