An equiconvex lens of refractive index `mu_(2)` is placed such that the refractive :

Options

A. Must be diverging if `mu_(2)` is less than the arithrnetic mean of `mu_(1)` and `mu_(3)`
B. Must be converging if `mu_(2)` is greater than the arithumetic mean of `mu_(1)` and `mu_(3)`
C. May be diverging if `mu_(2)` is less than the arithmetic mean of `m_(1)` and `mu_(3)`
D. Will neither be diverging nor converging if `mu_(2)` is equal to arithmetic mean of `mu_(1)` and `mu_(3)`