In the development of theory of mind, the child first understands, "I know that you know."

What is the next step that happens around age 5 to age 7 that lets the child believe that "You
know that I know."

a. That understanding is reciprocal.
b. That knowledge can be derived through inference.
c. That beliefs are understood prior to desires of others.
d. That they are less egocentric

a. That understanding is reciprocal.