Although the total ticket revenues from independent movie

number actually. number is higher or lower than.

+1 C

"amount" and "sum" are redundant when they are in the same clause.
Revenues is plural; therefore, "amounts" is wrong.

When we refer to money (in terms of dollars or even when we say notes etc), we have to use more or less as this is not countable. You never say

one money, two money or so on...


But we can now argue that notes are countable...I agree...but if they refer to money that is uncountable....moreover if we refer to bills (20 $ bills or like) then it becomes countable.

So A is redundant (amount+sum), D and E are wrong.

Anyways correct answer had to be one of the:
B. mounts to more
C. amounted to more

Although the total ticket revenues from independent movie theaters [u]amounts to a sum more than $300 million last year, many analysts predict that such theaters will struggle this year and in the future.
As we said last year..it has to be C.

tricky C, pretty tough for non-natives.

C it is

as it takes past tense "amounted" and here the word "sum" is redundant