From a point A with position vector p(i+...

From a point A with position vector `p(i+j+k)`, AB and AC are drawn perpendicular to the lines `r=k+lambda(i+j)" and "r=-k+mu(i-j)` respectively. A value of p is equal to

A

`-1`

B

`sqrt2`

C

2

D

`-2`

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The correct Answer is:

A, B, C, D

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