Which of the following dimensions represent a hexagonal unit cell ?

Options

A. `a = b ne c, alpha = beta= gamma =90^(@)`
B. `a= b= c, alpha = beta = gamma =90^(@)`
C. `a=b ne c, alpha= beta 90^(@), =gamma =120^(@)`
D. `a= b= c, alpha= beta = gamma = 90^(@)`

Answer

C