A space shuttle orbits the earth at about 12 kilometers per second. This speed is equal to how many kilometers per hour?
Choose the correct choice from the following answers:
A) 480 B) 2,880 C) 4,800 D) 28,800 E) 43,200

Rationale: "seconds in 1 hours : 60 s in 1 min 60 min in 1 hr 60 * 60 = 3600 sec in 1 hr 12 * 3600 = 43,200 answer : e"
Answer: E