Answer:
I also feel like the answer is A.)
Answer: C
Explanation: It has the word informed saying that they will know what the charges are.
I believe the answer is: It was located on peninsula between Europe and Asia and lied on the cross of trade routes
This location gave constantinople a strategic location to control the trades between European traders and Asian traders. They could obtain a lot of profit by either taxing the trades that pass through their territory, or monopolizing a certain type of product themselves.