Ensley used this figure in her proof of the Pythagorean theorem.

image e01aeac979a647feb6695cea1e70c9b7

In her proof, Ensley wrote the formula a+b−−−−√=c2. Which of the following explains why her formula is incorrect?

A
The sum of the square of a and the square of b should be equal to the square of c.

B
The sum of the square root of a and the square root of b should be equal to the square of c.

C
The square root of the sum of a and b should be equal to the square root of c.

D
The sum of the square of a and the square of b should be equal to the square root of c.

D