[单选题]
A cylinder contains 16 g kple9b7 xj99xt; j6iu of helium gas at STP:xr5.w-6aqo sxxe ,zk . How much energy is needed to raise r5sx,w -o kqe6.xzxa:the temperature of this gas to $20 \; ^{\circ}C$?
A. $789 \; J$
B. $798 \; J$
C. $879 \; J$
D. $998 \; J$
