JEE Main 202120 Jul, Evening shiftMathematicsMediumThree Dimensional Geometry249× since 2002The lines x = ay −-− 1 = z −-− 2 and x = 3y −-− 2 = bz −-− 2, (ab ≠\ne= 0) are coplanar, if :AOption A. b = 1, a∈\in∈R −-− {0}BOption B. a = 1, b∈\in∈R −-− {0}COption C. a = 2, b = 2DOption D. a = 2, b = 3CheckSkip · show solution