Which of the Following Claims Is True

Which of the following claims is true?

A) No one ever uses the traditional square of opposition anymore, since everyone agrees that it is based on a flawed view of existential import.
B) Some logicians still use the traditional square of opposition, but there is controversy over whether or not it is based on a flawed view of existential import.
C) Logicians now agree that the traditional square of opposition is based on the correct view of existential import, and they all now prefer it to the modern square.
D) Most logicians no longer use any square of opposition, but instead use the pentagon of opposition.
E) Most logicians no longer use any square of opposition, but instead use the hexagon of opposition.