[单选题]
Ten joules of heat energy are transferred to a sample of ideal gas at con+2 : wa7ag rcz1):g6xdhyugf rstant-co 5:o9s :ta3x gblhs pressure. As a resuhs a95s l :gbcoot:x-3lt, 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.
