One end of a cylindrical pipe has a radius of 1.5 cm. Water (density = 1.0x10³ kg/m³) streams steadily out at 7.0 m/s. The volume flow rate is:
A. 4.9x10³ m³/s
B. 2.5 m³/s
C. 4.9 m³/s
D. 7.0 m³/s
E. 48 m³/s