Final answer:
The costs of mobile billboards depend on both the area where they are displayed and the specific board company's fees, with factors such as exposure level and company services influencing the total cost. The statement is true.
Step-by-step explanation:
The costs associated with mobile billboards are influenced by several factors, including the area where the advertisement is displayed and the specific board company's fees. The area determines the exposure level of the advertisement to potential customers, with high-traffic areas typically costing more due to greater visibility opportunities.
On the other hand, the board company's fees could vary based on the company's market positioning, services offered (like design and duration of the ad campaign), and other logistics or add-on services associated with the mobile billboard.
Hence, the statement is true.