In a particular city there is a city-wide speed limit of 45 mph. If you are caught speeding, the fine is $200 plus $5 for every mile you go over the speed limit. For example, if you're ticketed for going 60 mph, your fine is 200 + 5(60 - 45) = $275. Last month, all the drivers who were fined for speeding averaged 55 mph with a
standard deviation of 10 mph. What was the standard deviation of the fines?
Choose the correct answer below
A. $200
B. S10
C. $250
D. $50