If sin θ and cos θ are the roots of the equation ax2 – bx + c = 0, then a, b and c satisfy the relation
A. a2 + b2 + 2ac = 0
B a2 – b2 + 2ac = 0
C. a2 + c2 + 2ab = 0
D. a2 – b2 – 2ac = 0