How can the Quadratic Formula be used to factor a quadratic​ equation?
Choose the correct answer below.

A.
Use the Quadratic Formula to find the coordinates of the vertex​ (h,k). Then the quadratic expression can be rewritten as (x-h)(x-k).
B.
Use the Quadratic Formula to find solutions to a quadratic equation written in standard form ax^2+bx+c=0. If the solutions are p and​ q, then the quadratic expression ax^2+bx+c can be rewritten as a(x-p)(x-q).
C.
Use the Quadratic Formula to find the coordinates of the vertex​ (h,k). The factors of the quadratic expression are h and k.
D.
Use the Quadratic Formula to find solutions to a quadratic equation written in standard form ax^2+bx+c=0. If the solutions are p and​ q, then the factors of the quadratic expression ax^2+bx+c are p and q.