The figure below shows a generic heating curve. A heating curve is a plot of the temperature of a substance as a function of the heat added at a constant rate $($time$)$ to the substance.

The slopes of which lines are related to the specific heat capacity of the substance in each phase.

I. $AB$

II$.BC$

III. $CD$

IV$.$ DE

V$.$ EF

I, III, and V

I, II$,$ III, IV$,$ and V

II and IV

II and III