There is an opening of 5 cm2 at the bottom of a tank. If the height of water in the tank is 5 m, then at what rate (in m3/s) will water flow out from this opening? (use g = 10 m/s2)

• A. 5 × 10-4
• B. 2.5 × 10-3
• C. 2.5 × 10-4
• D. 5 × 10-3