Given 1 mole of an ideal gas, in a state characterized by P_A, V_A, a change occurs so that the final pressure and volume are equal to P_B, V_B, where V_B > V_A. Which of these is true?
(a) The heat supplied to the gas during the process is completely determined by the values P_A, V_A, P_B, and V_B.
(b) The change in the internal energy of the gas during the process is completely determined by the values P_A, V_A, P_B, and V_B. 

(c) The work done by the gas during the process is completely determined by the values P_A, V_A, P_B, and V_B. 

(d) All three are true. 

(e) None of these is true.