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When a block of iron in mercury at 0^@C,...

When a block of iron in mercury at `0^@C,` fraction `K_1`of its volume is submerged, while at the temperature `60^@C,` a fraction `K_2` is seen to be submerged. If the coefficient of volume expansion of iron is `gamma_(Fe)` and that of mercury is `gamma_(Hg),` then the ratio `(K_1)//(K_2)` can be expressed as

A

`(1+60gamma_Fe)/(1+60gamma_Hg)`

B

`(1-60gamma_Fe)/(1+60gamma_Hg)`

C

`(1+60gamma_Fe)/(1-60gamma_Hg)`

D

`(1+60gamma_Fe)/(1+60gamma_Hg)`

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