Water at $$20^\circ C$$ is flowing through a 20 cm diameter pipe. Take kinematic viscosity of water at $$20^\circ C = 0.0101$$  stoke. Assume that the changes from laminar to turbulent at Re = 2320. The critical velocity will be

A

1.117 cm/s

B

11.17 cm/s

C

111.7 cm/s

D

0.117 cm/s