A man walking at a rate of 5km/hr crosses a bridge in 15 minutes. The length of the bridge is? Choose the correct option.
A) 1250 m
B) 1310 m
C) 1500 m
D) 1000 m
E) 1195 m

Rationale: "speed = 5 * 5 / 18 = 25 / 18 m / sec distance covered in 15 minutes = 25 / 18 * 15 * 60 = 1250 m answer is a"
Answer: A