In proper of division, p(x) ⁄ q(x) ÷ r(x) ⁄ s(x) is equal to

• A. p(x) s(x) ⁄ q(x) r(x)
• B. p(x) s(x) × q(x) r(x)
• C. p(x) s(x) + q(x) r(x)
• D. p(x) s(x) − q(x) r(x)