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Find the equation of a straight line in ...

Find the equation of a straight line in the plane `vecr.vecn =d` which is parallel to `vecr = veca + lamda vecb` and passes through the foot of the perpendicular drawn from point `P (veca) ` to `vecr.vecn=d ` (where `vecn .vecb=0).`

A

`veca + ((vecq - veca .vecn))/(|vecn|)`

B

`veca + 2 (((vecq - veca.vecn))/(|vecn|^(2))) vecn`

C

`veca + (2 (vecq + veca.vecn))/(|vecn|) vecn`

D

`veca- (2 ( vecq - veca.vecn))/(|vecn|)`

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The correct Answer is:
B
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