Answer:
its C or D
Step-by-step explanation:
It could be c because they did mention that the oil prices would change, there was not enough money, this situation is like the great depression, a lot of things went down but prices went up.
It could be D because for the same reason, peoples salaries went down but people that sell stuff (businesses) there prices went up, for example farmers with wheat, they put the prices higher for the same reason, they werent gaining the same money they use to earn. If that makes sense :(