[单选题]
Ten joules of heat energy avgh9e2 s7zx/ure transfer0 bk7 *x/,32h xnd1f lvrvdxsored to a sample of ideal gas at constant prk 1 v*v2/roldfbxh3 0,dx7 xsnessure. As a result, the internal energy of the gas
A. increases by 10 J.
B. increases by less than 10 J.
C. increases by more than 10 J.
D. remains unchanged.
