What were the impacts of Buddhism in Indian culture

Q. What were the impacts of Buddhism in Indian culture?
1. The religious indifference between women and shudras were removed by
Buddhism.
2. Sanskrit developed as a literary language.
3. In Sanchi, Bharhut, Bodhgaya, Amravati art and paintings were flourished.
4. It popularized idol worship.
5. Concept of residential universities became popular.
Which of the above is/are correct?
(a) 1 and 4
(b) 2 and 3
(c) All of above
(d) None
Ans: (c) All of above