If Horizontal Decalage Were Shown to Apply Across Piaget's Developmental

Multiple Choice

If horizontal decalage were shown to apply across Piaget's developmental stages, this result would

A) strengthen the validity of the hypothesized stages.
B) have little or no impact on the stage theory.
C) weaken the validity of the hypothesized stages.
D) be trivial because Piaget already recognized individual differences.