Read the key ideas from two passages.

Passage 1
It costs less to run school buses four days a week than five days a week. Electricity does not cost as much when schools are only open four days a week.

Passage 2
Cafeterias in schools that operate four days a week do not purchase as much food. Districts also spend less on custodial services in schools that are only open four days a week.

Which statement best combines the ideas from both passages?

Schools spend a lot of money each year on food costs.
It is very expensive to run school buses five days a week.
Schools can save money by cutting out one day of school each week.
Several schools have successfully chosen to be open only four days a week.