Determine the flow velocity of oil $(870 kg/m^3)$ in a pipe if a pressure change of $1.7 kPa$ is recorded when it goes through a Venturi tube with a throat area that $\frac{2}{3}$ the size of the inlet area.

A. 0.06 m/s
B. 1.77 m/s
C. 1.97 m/s
D. 2.78 m/s
E. 3.50 m/s