Which of the Following Scenarios Would Serve as an Example

Which of the following scenarios would serve as an example of a micro-level reason for divorce?

A) Gary finds it hard to cope with the fact that his wife is constantly away on military duty.
B) Tiffany has found out that her husband Jeff is cheating on her with another woman.
C) Donna has filed for divorce from Colin after he lost his job during an economic downturn.
D) Harry has found a website which offers to help people divorce for a very low price.