What Was Distinctive About the 1968 Revolt in Czechoslovakia, Also

What was distinctive about the 1968 revolt in Czechoslovakia, also known as the Prague Spring?

A) It was almost entirely a protest about women's rights in the Soviet bloc, but it gained international support in the wake of the Soviets' draconian response.
B) It was the only uprising that was successful in achieving meaningful and lasting reform within the Soviet bloc.
C) It began within the Czechoslovak Communist Party as an attempt at reform based on the idea of "socialism with a human face."
D) Although it was a student-led movement, the participation of housewives and mid-level bureaucrats kept the momentum going.