Anuj, Ankit, Anu and Alka are teachers who teach Biology, History and Mathematics. Biology is the only subject taught by two teachers, one of whom is male. Two of the four are married to each other and they teach History and Biology respectively. Ankit teaches Biology and is unmarried.
Anu and Alka are females.
Which subject does Anuj teach?
1
History
2
Mathematics
3
Cannot be determined
4
Biology