In the figure shown below, a fluid of density `2 xx 10^(3)` kg `m^(-3)` is flowing in a horizontal pipe. The speed of water at point A is 4 cm `s^(-1)`, what is its speed at point B?
A. 3 cm `s^(-1)`
B. 22.72 cm `s^(-1)`
C. 6 cm `s^(-1)`
D. 60 cm `s^(-1)`