Till last year in the country of Scavengia, a nation with falling birth rates, every 5% rise in condom prices has decreased per capita sales of condoms by five percent. Scavengia is about to raise taxes on condoms by 5 cents per pack. The average price of condoms in Scavengia is and has been for more than a year 50 cents per pack. So the tax hike stands an excellent chance of reducing per capita sales of condoms by five percent.
Which of the following is an assumption on which the argument depends?
A. Any decrease in per capita sales of condoms in Scavengia will result mainly from an increase in the number of people who are past the reproductive age.
B. At present, the price of a pack of condoms in Scavengia includes taxes that amount to less than ten percent of the total selling price.
C. Condom companies are unlikely to reduce their profit per pack of condoms to avoid an increase in the cost per pack to consumers in Scavengia.
D. The number of people in Scavengia who use condoms has remained relatively constant for the past several years.
E. Previous increases in condom prices in Scavengia have generally been due to increases in taxes on condoms.