An ideal gas (the system) is contained in a flexible balloon at a pressure of 1 atm and is initially at a temperature of 20.C. The surrounding air is at the same pressure, but its temperature is 25C When the system has equilibrated with its surroundings, both systems and surroundings are at 25C and 1 atm. In changing from the initial to the final state, which one of the following relationships regarding the system is correct? Select one aw> O b.a> 0 CDEO & DECO e DH = 0