Movie mania's claim = Change from coconut to canola has hurt sales.
author's claim = moviemania sold 5% more popcorn last year than in the previous year. (we have to support this)

A. Total sales of all refreshments at Moviemania's movie theaters increased by less than 5 percent last year.
Correct : It strongly supports the argument AGAINST moviemania's claim by stating that even when total sales of all refreshments increased less than 5%, they sold 5% more popcorn last year.

B. Moviemania makes more money on food and beverages sold at its theaters than it does on sales of movie tickets.
Incorrect : Movie ticket sales is irrelevant to the scope of the argument.

C. Moviemania's customers prefer the taste of popcorn popped in coconut oil to that of popcorn popped in canola oil.
Incorrect : This support's Moviemania's claim, it does not support the argument AGAINST moviemania's claim.

D. Total attendance at Moviemania's movie theaters was more than 20 percent higher last year than the year before.
Incorrect : Total attendance could be those ppl who dont buy popcorn at all. Hence there is no relation between total attendance and total sales.

E. The year before last, Moviemania experienced a 10 percent increase in popcorn sales over the previous year.
Incorrect : -------- Same as C --------