A 600 kg rocket is set for a vertical firing. If the exhaust speed is 1000 m/s. The mass of gas ejected per second to supply the thrust needed to overcome the weight of the rocket is

Question

$$(a)\;5.88 \;kg/s \quad (b)\;4.88\; kg/s \quad (c)\;2.88\; kg/s \quad (d)\;3.88\; kg/s$$