[单选题]
When the first law o5mtml0op9gjjt4 b 3 .kchu3t:mlw.- xsjye 6yh*nmj/z4q1 -j f thermodynamics, $Q = \Delta U + W$, is applied to an ideal gas that is taken through an isochoric process,
A. $\Delta U = 0$
B. $W = 0$
C. $Q = 0$
D. none of the above
