Alpha and beta are the roots of the equation x^2 + bx - c = 0. What is the equation whose roots are b and c?

A) x^2 - (b + c)x + bc = 0
B) x^2 + (b + c)x + bc = 0
C) x^2 - (b - c)x + bc = 0
D) x^2 + (b - c)x + bc = 0