A flat balloon is inflated by filling it with helium from a tank of compressed helium. The final volume of the balloon is \(6 \mathrm{~m}^{3}\). The barometer reads \(100 \mathrm{kPa}\). Consider the tank, the balloon, and the connecting pipe as a system. The work done against the atmosphere is

(a) \(900 \mathrm{~kJ}\)

(b) \(600 \mathrm{~kJ}\)

(c) \(300 \mathrm{~kJ}\)

(d) None of these