Dunning Kruger effect.

Since the Dunning Kruger effect has being invented,

A) stupid people clearly think of them as being smarter than they are while they are more stupid than they are, (pun intended)

B) smart people are smarter than they think they are while thinking they are more stupid than they really are,( no pun here)

C) and wise people are smarter than they think they are but play more stupid than the others so they don't attract anybody's attention and get beaten up to death for discrimination against stupid