Homer wants to identify the center and radius of the circle defined by the equation x^2 + y^2 - 14x + 2y - 25 = 0. he follows these steps: step 1: (x^2 - 14x) + (y^2 + 2y) = 25 step 2: (x^2 - 14x + 49) + (y^2 + 2y + 1) = 25 step 3: (x - 7)^2 + (y + 1)^2 = 25 step 4: the center is (7, -1), and the radius is 5. at which step did homer make a mistake, and what was it? a. step 1; he did not apply correctly the addition property of equality. b. step 2; he failed to add the new constant terms to both sides of the equation. c. step 3; he failed to square both sides of the equation. c. step 4; he interpreted the equation incorrectly when finding the location of the center.