Q 2117180980.    

Assertion : The direction ratios of the line joining origin and point `(x, y, z)` must be `x,y, z`.

Reason : If `P (x, y, z)` is a point in space and `OP = r`, then direction cosines of `OP ` are `x/r ,y/r, z/r`.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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