If a source says quot;the internal energy of the methane is U = 100 Jmol,quot; which of the following is true?

If a source says "the internal energy of the methane is U = 100 J⁄mol," which of the following is true?

a. In order to lower the temperature of the methane to absolute zero, you would have to remove 100 joules of heat from each mole of methane.