The vector equation of the line passing ...

The vector equation of the line passing through `(2,3,4)` and
parallel to Z-axis is

A

(a) `barr=(2hati+3hatj+4hatk)+lambdahatk`

B

(b) `barr=2hati+lambda(hati+hatj)`

C

(c) `barr=(2hati+3hatj+4hatk)+4lambda(hati-hatj)`

D

(d) `barr=hatk+lambda(2hati+3hatj+4hatk)`

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The correct Answer is:

A

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