The number of distinct real values of ...

The number of distinct real values of `lambda` , for which the vectors `-lambda^2 hat i+ hat j+k , hat i-lambda^2 hat j+ hat ka n d hat i+ hat j-lambda^2 hat k` are coplanar is

A

`0`

B

`1`

C

`pmsqrt(2)`

D

`3`

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The correct Answer is:

C

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