What Does an Outdoor Advertiser Buy When It Buys a 100

What does an outdoor advertiser buy when it buys a 100 showing?

A) It has been guaranteed that 100 percent of the population will be exposed to its outdoor advertising daily until there is a 10 percent return.
B) It buys 100 panels for a specified period of time, usually 100 days.
C) It pays 100 percent of the rate card price for as many panels as it chooses to utilize.
D) It buys 100 percent of the billboards owned by that particular outdoor advertising company within the specified area for 100 days.
E) It has its message displayed on as many panels as needed to provide a daily exposure equal to 100 percent of the market's population.