Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Figure: External Benefit
-(Figure: External Benefit) Refer to the figure. Shingles is a painful and blistering skin rash that generally affects older adults. The shingles virus is transmitted by those with an active outbreak, and it can cause chicken pox in people who never had it. In this figure depicting the market for shingles vaccinations, what is the external benefit of a shingles vaccine?

A) $4
B) $10
C) $5
D) $7