A Saturn V Rocket with an Initial Mass M₀ of 3

Multiple Choice

A Saturn V rocket with an initial mass m₀ of 3 $\times$ 10⁶ kg has a payload that accounts for 27% of this mass,a burn rate of 15 $\times$ 10³ kg/s,and a thrust F_th of 35 $\times$ 10⁶ N.The exhaust speed is

A) 1.46 km/s
B) 1.85 km/s
C) 2.09 km/s
D) 2.33 km/s
E) 2.54 km/s