In her proof, Ensley wrote the formula Va + b = c? 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 root of c.

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

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

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