What Revised Version of the Principle of Alternate Possibilities Does

Multiple Choice

What revised version of the principle of alternate possibilities does Frankfurt ultimately accept?

A) One is only morally responsible if one did what one did because one couldn't have done otherwise
B) One is only morally responsible if one could have done otherwise
C) One isn't responsible for what one's done if one did it only because one couldn't have done otherwise
D) None of the above