What is the relation between the plane ax + by + cz + d = 0 and a1, b1, c1 the direction ratios of a line, if the plane and line are perpendicular to each other?

• A. ( frac {a1}{b1} = frac{a2}{c1} = frac{c2}{b2} )
• B. ( frac {a1}{a2} = frac{b1}{c2} = frac{c1}{b2} )
• C. ( frac {a}{a1} = frac{b}{b1} = frac{c}{c1} )
• D. ( frac {c1}{a2} = frac{b1}{b2} = frac{a1}{c2} )