ANSWER ASAPPPPP PLEASEEEEE

First graders are using Venn diagrams to show to which categories their blocks belong. They identify that one block belongs to the "blue" category, the "triangle" category, and the "large" category. This classification ability is typical of what types of students?

A) students at the pre-operational stage
b) students at the concrete operational stage
c) students who have high IQs
d) students who are in the zone of proximal development