If the lattice constant of this semiconductor is decreased, then which of the following is correct?

A

All $$E_c, E_g, E_v$$ decrease

B

All $$F_F$$ increase

C

$$E_c$$, and $$E_v$$ increase but $$E_g$$ decreases

D

$$E_c$$, and $$E_v$$ decrease $$E_g$$ increases