Which of the following states the Pythagorean theorem? a?

AIn a right triangle, the square of the hypotenuse equals the sum of the squares of the legs.

BIn a right triangle, the hypotenuse equals the sum of the squares of the legs.

CIn a right triangle, the hypotenuse equals the sum of the legs.

DIn a right triangle, the square of the hypotenuse equals the sum of the legs.