At two points ‘1’ and ‘2’ in a pipeline, the velocities of fluid are v and 3v respectively. Both points are at same elevation. The flow can be assumed to be incompressible, inviscid, steady and irrotational. The difference in pressure $$P_{1}$$ and $$P_{2}$$ at point 1 and 2 is

A

0.5 $$\rho v^{2}$$

B

2 $$\rho v^{2}$$

C

3 $$\rho v^{2}$$

D

4 $$\rho v^{2}$$