At 0∘C densities of a cork and a liquid in which the cork floats are d₁ and d₂ respectively. The coefficient of expansion for the material of the cork and the liquid are? y and 100 y respectively. If the cork sinks when the temperature of the liquid is 't∘c' then ratio d₂/d₁ is?
A. 1+100yt/1+yt
B. 1+yt/1+100yt
C. 100+yt/1+yt
D. 1+yt/100+yt