It takes 78 days to create a custom motorcycle. Write an algebraic expression to describe the number of days it takes to create n custom motorcycles. How many days will it take to create 6 custom motorcycles?
A) 78 + n; 84 days
B) 78 + 78n; 546 days
C) 78n; 468 days
D) 78⁄n; 13 days