Which situation most likely describes correlation and causation?

A. the number of songs downloaded and the number of people attending a concert
B. the number of pets owned and the amount of money spent at pet stores
C. the number of computers in a home and the number of movies watched
D. the number of bagels purchased and the number of hot chocolates purchased

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?