The two vectors {veca = 2hati + hatj + 3...

The two vectors `{veca = 2hati + hatj + 3hatk, vecb = 4hati - lambda hatj + 6hatk}` are parallel if `lambda` is equal to:

A

2

B

`-3`

C

3

D

`-2`

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The correct Answer is:

D

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