How Does Empathy Differ from Sympathy

How does empathy differ from sympathy?

A) Empathy involves feeling concern for another in reaction to his or her situation or emotional state, without necessarily sharing the same emotions.
B) Sympathy involves feeling concern for another in reaction to his or her situation or emotional state, without necessarily sharing the same emotions.
C) Empathy and sympathy are essentially the same thing.
D) Empathy is a moral emotion, whereas sympathy is not.