I'd say the answer is B, its just the most logical in my opinion. Plus its true.
Over the past month, I've lent a total of $50 to five of my friends.
What is the average amount that I owe each of those five people ?
Answer:
emphasis
Explanation:
Bexause its non of the rest
If the subject consists of two or more words that are connected by and, the subject is plural and requires a plural verb.