If a store runs out of advertised material during a sale, customers become upset, and the store loses not only the sale but also goodwill. From past experience, a music store finds that the mean number of CDs sold in a sale is $45, the standard deviation is 15, and a histogram of the demand is approximately normal. The manager is willing to accept a 2.5% chance that a CD will be sold out. About how many CDs should the manager expect to sell on such occasions?
A) 38 CDs
B) 42 CDs
C) 48 CDs
D) 53 CDs