An escalator moves towards the top level at the rate of 12 ft.sec and its length is 196 feet. If a person walks on the moving escalator at the rate of 2 feet per second towards the top level, how much time does he take to cover the entire length.	Pick.
A) 14 sec	B) 10 sec	C) 12 sec	D) 8 sec	E) 9 sec

Rationale: "time taken to cover the entire length = tot . dist / resultant speed = 196 / ( 12 + 2 ) = 14 sec answer : a"
Answer: A