Select a, b, or c to indicate the correctly punctuated sentence.
a. "A mirror reflects a man's face, said Colin Powell, but what he is really like is shown by the kind of friends he chooses".
b. "A mirror reflects a man's face," said Colin Powel, but what he is really like is shown by the kind of friends he chooses."
c. "A mirror reflects a man's face, said Colin Powell, but what he is really like is shown by the kind of friends he chooses."