[求助]诚心请教大家一道题，先谢谢大家

0.     Sartre
believed each individual is responsible to choose one course of action over
another one, that it is the choice that gives value to the act, and that
nothing that is not acted upon has value.D 

(A) each
individual is responsible to choose one course of action over another one

(B) that each
individual is responsible for choosing one course of action over another

(C) that each
individual is responsible, choosing one course of action over another

(D) that each
individual is responsible to choose one course of action over the other（B）

(E) each
individual is responsible for choosing one course of action over other ones

这道题正解是B，我选的D，请问B和D有什么区别，除了responsible to和resoponsible for的区别，是over another和over the other的区别吗，如果是区别又是什么呢，我指的是在这个句子的环境下，谢过

one, another

some, the others