[单选题]
A container of ideal gas at STP undergoes an isothermal expi5od/f,m*t j qya;0 haansion a) : i.a uk -uberj-bav4 tik;tuqe*-q5nd its entropy changes buv-eaei5k)*r tiuua b.k -;-j4qqt: by 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
