Which of the following best defines molar heat capacity. a. The quantity of heat required to lower the temperature of 1 liter of a substance by 1°C b.The quantity of heat required to raise the temperature of 1 gram of a substance by 1°F c. The quantity of heat required to raise the temperature of 1 gram of a substance by 1°C d, The quantity of heat required to raise the temperature of 1 mole of a substance by 1K