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V(0) and V(E) represent the velocities, ...

`V_(0)` and `V_(E)` represent the velocities, m0 and mE the refractive indices of ordinary and extraordinary rays for a doubly refracting crystal. Then

A

`V_(0) ge V_(E),mu_(0) le mu_(E)` if the crystal is calcite

B

`V_(0) le V_(E),mu_(0) le mu_(E)` if the crystal is quartz

C

`V_(0) le V_(E),mu_(0) ge mu_(E)` if the crystal is calcite

D

`V_(0) ge V_(E),mu_(0) ge mu_(E)` if the crystal is quartz

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