An aeroplane is flying at an height of 14 km where temperature is $$-45^\circ C$$. The speed of the plane is corresponding to M = 2. Find the speed of the plane if R = 287 J/kg K and $$\gamma = 1.4$$.

A

2179 km/h

B

3010 km/h

C

3250 km/h

D

3379 km/h