Carbon,Silicon,and Germanium have four valence electrons each. These are characterized by valence and conduction bands separated by energy band gaps respectively equal to $(E_g)_C, (E_g)_{Si},$ and $(E_g)_{Ge}$. Which of the following statements is true?
- A$(E_g)_{Si} < (E_g)_{Ge} < (E_g)_C$
- B$(E_g)_C < (E_g)_{Ge} > (E_g)_{Si}$
- C$(E_g)_C > (E_g)_{Si} > (E_g)_{Ge}$
- D$(E_g)_C = (E_g)_{Si} = (E_g)_{Ge}$
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