Area of a rectangle having vertices A, B...

Area of a rectangle having vertices A, B, C and D with position vectors : `-hati + (1/2)hatj + 4hatk, hati + (1/2)hatj + 4hatk, hati - (1/2)hatj + 4hatk` and `-hati - (1/2)hatj + 4hatk`, respectively is:

A

`(1)/(2)`

B

1

C

2

D

4

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The correct Answer is:

C

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