Who has written books named ‘Lilavati’ and ‘Sidhanta Shiromani’?

a) is correct. Bhaskaracharya was afamous mathematician, who composed the two books.

b) is incorrect. Bodhayan is best known for having proposed the first version of Pythagoras theorem, called Chitti Theorem.

c) is incorrect. Aryabhatta is credited with the discovery of zero.

d) is incorrect. Nagarjuna was a prominent astronomer and astrologist.