As a First-Grade Teacher Reads a Book About Penguins in Antarctica

As a first-grade teacher reads a book about penguins in Antarctica, she points to Antarctica on a globe. Six-year-old John seems really puzzled. "How come they don't fall off the earth?" he asks. From Piaget's perspective, John can best be described as:

A) Experiencing disequilibrium
B) Have difficulty with conservation
C) Having difficulty with class inclusion
D) Accommodating when he should be assimilating