Take into consideration a substance that melts at 75 °C and boils at 115 °C. Which of the following graphs best depicts the compound's heating curve between 50 °C and 250 °C?

Heating curve graph showing temperature increase from 50 °C to 250 °C for a substance.

Heating curve graph depicting a substance's temperature changes between 50 °C and 250 °C.

Heating curve graph illustrating temperature rise and phase changes of a substance.

Heating curve graph showing temperature decrease as heat is added to a substance.