What Was Piaget's View on Intellectual Development Occurring in Stages

What was Piaget's view on intellectual development occurring in stages?

A) Piaget argued against the notion that children progress through stages of intellectual development.
B) Piaget argued that all children go through four major stages, but that the order of stages varies from child to child.
C) Piaget argued that all children go through four major stages in the same order.
D) Piaget argued that in some cultures children pass through only one stage, while in other cultures children progress through as many as 12 stages.