If $a, b, c$ are in geometric progression,then which of the following is true?
- A$a^2, b^2, c^2$ are in geometric progression.
- B$a^2(b + c), c^2(a + b), b^2(a + c)$ are in geometric progression.
- C$\frac{a}{b + c}, \frac{b}{c + a}, \frac{c}{a + b}$ are in geometric progression.
- DNone of these.
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