If the $4^{th}$,$7^{th}$,and $10^{th}$ terms of a Geometric Progression $(GP)$ are $a, b,$ and $c$ respectively,then:
- A$b = \frac{a + c}{2}$
- B$a^2 = bc$
- C$b^2 = ac$
- D$c^2 = ab$
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