If ${A_1},\;{A_2};{G_1},\;{G_2}$ and ${H_1},\;{H_2}$ be $AM's,\;GM's$ and $HM's$ between two quantities, then the value of $\frac{{{G_1}{G_2}}}{{{H_1}{H_2}}}$ is
If ${A_1},\;{A_2};{G_1},\;{G_2}$ and ${H_1},\;{H_2}$ be $AM's,\;GM's$ and $HM's$ between two quantities, then the value of $\frac{{{G_1}{G_2}}}{{{H_1}{H_2}}}$ is
- A
$\frac{{{A_1} + {A_2}}}{{{H_1} + {H_2}}}$
- B
$\frac{{{A_1} - {A_2}}}{{{H_1} + {H_2}}}$
- C
$\frac{{{A_1} + {A_2}}}{{{H_1} - {H_2}}}$
- D
$\frac{{{A_1} - {A_2}}}{{{H_1} - {H_2}}}$
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