Rhombohedral crystal system has the foll...

Rhombohedral crystal system has the following unit cell dimensions `:`

A

`a=b=c, alpha=beta=gammane90^(@)`

B

`a=bnec,alpha=beta=gamma=90^(@)`

C

`anebnec,alpha= beta =gamma=90^(@)`

D

`a=bnec,alpha=beta=90^(@),gamma=120^(@)`

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The correct Answer is:

D

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