question_answer

If line \[\frac{x-{{x}_{1}}}{l}=\frac{y-{{y}_{1}}}{m}=\frac{z-{{z}_{1}}}{n}\] is parallel to the plane \[ax+by+cz+d=0\], then [MNR 1995: MP PET 1995]

A)            \[\frac{a}{l}=\frac{b}{m}=\frac{c}{n}\]

B)            \[al+bm+cn=0\]

C)            \[\frac{a}{l}+\frac{b}{m}+\frac{c}{n}=0\]

D)            None of these