Which of the Following Best Describes the Difference Between Perfect

Which of the following best describes the difference between perfect and imperfect obligations?

A) A perfect obligation is about what you owe to specific people, whereas an imperfect obligation is about what you owe to everyone.
B) A perfect obligation applies to everyone, whereas an imperfect obligation applies only to people who have made a mistake.
C) A perfect obligation is one that must be fulfilled in every relevant case, whereas an imperfect obligation only needs to be fulfilled sometimes.
D) A perfect obligation is an obligation not to harm someone, whereas an imperfect obligation is an obligation to help others.