Definition: You are given a question on moral disputes. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input:  Mill thinks that each person desires
(A)to do his or her duty. (B)to be virtuous. (C)his or her own happiness. (D)none of the above

C