If rocket exhaust velocity doubles and burn rate triples, how much does thrust increase?

[XwakeriderX]

If a rocket doubles it's relative exhaust velocity while do tripling the "burn rate" of fuel, the thrust...
A) doubles
B) Triples
C) increases 5 times
D) increases 6 times
E) none of the above!



Thrust=dv/dt=lVe(dM/dt)l


I just plugged in 2 for V and 3 for dM and 1 for dt giving me 6

 

[Delphi51]

Looks good to me.