Read the following statements;
A. When small temperature difference between a liquid and its surrounding is doubled the rate of loss of heat of the liquid becomes twice.
B. Two bodies P and Q having equal surface areas are maintained at temperature $10^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$. The thermal radiation emitted in a given time by $P$ and $Q$ are in the ratio 1.15
C. A carnot Engine working between 100 K and 400 K has an efficiency of $75 \%$
D. When small temperature difference between a liquid and its surrounding is quadrupled, the rate of loos of heat of the liquid becomes twice.
Choose the correct answer from the options given below :