Magazine A has a cost for a full-page ad of $10,000 and a circulation figure of 5,000,000. Of these 5,000,000 subscribers, 40 percent are tennis buffs. Magazine B has a cost for a full page of $10,000 and a circulation of 3,000,000. Of the 3,000,000 subscribers 75 percent are tennis buffs. If you sold tennis racquets and wanted to compare the cost per thousand (CPM) of these magazines, which would you choose?
A. Magazine A
B. Magazine B
C. Magazine A would be just as effective as Magazine B
D. More information is needed on audience size
E. More information is needed on costs
Answer: B.