[单选题]
When the first law of th1epn5 )mg ;*nm,*iu x mrcgkk,ej.hnf- en2 ynzar)e;i6ysu,4 rmodynamics, $Q = \Delta U + W$, is applied to an ideal gas that is taken through an adiabatic process,
A. $\Delta U = 0$
B. $W = 0$
C. $Q = 0$
D. none of the above