A river 2m deep and 45 m wide is flowing at the rate of 5 kmph the amount of water that runs into the sea per minute is? Choose the correct choice from the following answers:
A) 4500 m 3  B) 4580 m 3  C) 7500 m 3  D) 4900 m 3  E) 4700 m 3

Rationale: "explanation : ( 5000 * 2 * 45 ) / 60 = 7500 m 3 answer : option c"
Answer: C