Tanya heats 100 g of a liquid with an electric heater which has a constant power output of 60 W. After 100 s the rise in temperature is 40 K. The specific heat capacity of the liquid in ${\text{J}}\,{\text{k}}{{\text{g}}^{ - 1}}{{\text{K}}^{ - 1}}$ is calculated from which of the following?

A.     $\frac{{60 \times 100}}{{0.1 \times 40}}$

B.     $\frac{{60 \times 0.1}}{{40}}$

C.     $\frac{{0.1 \times 40}}{{60}}$

D.     $\frac{{60}}{{40}}$

A