A man is standing between two parallel cliffs and fires a gun and he hears first and second echos after 1.5 seconds and 3.5 seconds, respectively. If velocity of sound in air is 340 m/s, then distance between the cliffs is

A man is standing between two parallel cliffs and fires a gun and he h

1.	A man is standing between two parallel cliffs and fires a gun and he hears first and second echos after 1.5 seconds and 3.5 seconds, respectively. If velocity of sound in air is 340 m/s, then distance between the cliffs is
A.	1190 m
B.	510 m
C.	395 m
D.	850 m
Answer» E.