What’s the answer to this question

The answer to the question is letter C. You can use the app “Photomath” for these type of problems and they will give you the steps too
Answer:
c
Step-by-step explanation:
(7x-4)(8x+5)
Using the FOIL method:
56x^2+35x-32x-20
= 56x^2+3x-20
This is your answer