Renee, a 6-Year-Old, Is Unable to Answer the Question, "How

Renee, a 6-year-old, is unable to answer the question, "How are a motorcycle and a bicycle alike?" Mohammed, a 17-year-old, answers the same question by saying, "They are both types of transportation." What statement about
Renee and Mohammed is most true?

A) Renee's inability to answer the question is very unusual for a child her age.
B) Mohammed has demonstrated the ability to think concretely.
C) Mohammed has demonstrated the ability to think abstractly.
D) According to Piaget's theory, Renee and Mohammed are both developmentally delayed.