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Assertion: Let veca=hati+hatj and vecb=h...

Assertion: Let `veca=hati+hatj and vecb=hatj-hatk` be two vectors. Angle between `veca+vecb and veca-vecb=90^0`
Reason: Projection of `veca+vecb on veca-vecb` is zero
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true R is not te correct explanation of A
(C) A is true but R is false.
(D) A is false but R is true.

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