[单选题]
A container of ideal gas at STP undsc xt: 60e.nclergoes an isothermaltmy/0ews5/r o.z7zb d expansion and its entropy changes by5/zzdmr7tw./o0b s ey 3.7 J/e K. How much work does it do?
A. zero
B. $1.0 \times 10^{3} \; J/K$
C. $-1.0 \times 10^{3} \; J/K$
D. none of the above
