For a Rocket propulsion velocity of exhaust gases relative to rocket is 2 km/s. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rocket to rise up with acceleration $4.9 m/s^{2}$ will be :

Question

( A ) 12.25 kg/s
( B ) 7.35 kg/s
( C ) 5.2 kg/s
( D ) 17.5 kg/s