When an ideal gas is taken from state `a` to `b`, along a path `acb, 84 kJ` of heat flows into the gas and the gas does `32 kJ` of work. The following conclusions are drawn. Mark the one which is not correct.
A. If the work done along the path `adb` is `10.5 kJ`, the heat will flow into the gas is `62.5 kJ`
B. When the gas is returned from `b` to `a` along the curved path, the work done on the gas is `21 kJ`, and the system absorbs `73 kJ` of heat
C. If `U_(a) = 0, U_(d) = 42 kJ`, and the work done along the path `adb` is `10.5 kJ` then the heat absorbed in the process `ad` is `52.4 kJ`.
D. If `U _(a) = 0, U_(d) = 42 kJ`, heat absorbed in the precess `db` is `10 kJ`.