Match each description with the corresponding stage of cognitive development according…

Match each description with the corresponding stage of cognitive development according to Piaget.
1. Emma has just learned that even if her teddy bear is covered by a blanket, she can remove the blanket and get her teddy bear
2. Ana knows that if there are more grapes than cherries, and more cherries than blueberries, then there are more grapes than blueberries.
3. August doesn’t understand how some children in his class can have beliefs that are different from his own
A. Concrete operational
B. Conventional
C. Sensorimotor
D. Post operational
E. proportional
F. Formal operational