Sandwiches cost $5, french fries cost $3, and drinks cost $2. The expression 5 n + 3 n + 2 n gives the total cost, in dollars, for buying a sandwich, french fries, and a drink for n people. Which is another way to write this expression?
A. 10 n
B. 10 n³
C. 30 n
D. 30 n³