18. Chia Burgers began operations by opening 115 restaurants in Western Canada at the end of its first year of operations. By the end of year 2, an additional 5 restaurants were opened. By the end of year 3, there were 130 restaurants operational. At the end of year 5, there were 138 total restaurants. If the number of eating establishments is expected to grow in year 6 at the same rate as the percentage increase in year 5, how many new eating establishments will be added in year 6?

A. 5

B. 6

C. 7

D. 8

E. 9