The ratio of the roots of the equation a₁ x² + b₁x + c₁ = 0 and a₂ x² + b₂x + c₂ = 0 are equl, then
A. (b₁/b₂)² = a₂c₂/a₁c₁
B. (c₁/c₂)² = b₁c₂/c₁b₂
C. (a₁/a₂)² = (c₁/c₂)²
D. (b₁/b₂)² = a₁c₁/a₂c₂