The correct option is C All of above
Literary
sources are divided into three categories; religious, secular and
foreign accounts.Literary sources inform us about the political, social ,
economic , religious and cultural life of our ancestors. Most of the
ancient manuscripts are religious in nature. Besides the religious
literature there also exists a vast body of secular literature on the subject of mathematics, medicines and science. Many learned people were traveling around the world during the ancient and medieval period. These people were making account of what they saw in these foreign territories. For instance, Greek , Roman and Chinese travelers came to India and they left behind
accounts of things that they saw.