A wheel rotates 10 times every minute and moves 20 cm during each rotation. How many ems does the wheel move in 1 hour?	Choose the correct choice from the following answers:
A) 20000
B) 14000
C) 23000
D) 120000
E) none of these

Rationale: explanation : number of wheel moves in 1 hour = 10 * 60 = 600 distance moved = 600 * 200 = 12000 answer : d
Answer: D