For a particular process, q = 25 kJ and w = –15 kJ. Which of the following statement(s) is/are true?

A. Work is done by the system on the surroundings.
B. The temperature of the surroundings increases.
C. The internal energy of the system increases.
D. The process is exothermic.
E. Statements A and B are true.
F. Statements A and C are true.
G. Statements C and D are true.