Most parents who are generous are good parents, but some self-centered parents are also good parents. Yet all good parents share one characteristic: they are good listeners. If all of the statements in the passage are true, which one of the following must also be true?
A: All parents who are good listeners are good parents.
B: Some parents who are good listeners are self-centered.
C: Some parents who are good listeners are not good parents.
D: Most parents who are good listeners are generous.
Choose A, B, C or D as your solution.
B