What do they mean, "a wise guy" and "a wise man"?
A.
"A wise guy" and "a wise man" both mean someone is wise.
B.
"A wise guy" is more capable than "a wise man".
C.
“A wise man”is really wise, but "a wise guy" is stupid and pretends to be wise.
D.
“A wise guy”is really wise, but "a wise man" is stupid and pretends to be wise.