A clock shows the time as 9 a.m. If the minute hand gains 7 minutes every hour, how many minutes will the clock gain by 6 p.m.?  Options:
A) 30 min B) 35 min C) 63 min D) 50 min E) 55 min

Rationale: "there are 9 hours in between 9 a . m . to 6 p . m . 9 * 7 = 63 minutes . answer : c"
Answer: C