A Criticism of Traditional Piagetian Tasks Is That

A criticism of traditional Piagetian tasks is that:

A) infants may be able to perform successfully on the tasks without having the underlying representational competencies.
B) infants may have underlying representational competencies that they are unable to express through their performance on the tasks.
C) the tasks are only reliable when infants from certain cultural groups are tested.
D) the procedures are so complex that other researchers are unable to reproduce Piaget's methods.