Assume That, Upon Divorce, Alan Is Ordered by the Court

Assume that, upon divorce, Alan is ordered by the court to pay permanent alimony to his former wife, Margaret, in the amount of $3,500 per month. Three years later, which of the following factors could be a proper legal basis for Alan's application to the court for a reduction in the
Amount of alimony he must pay to Margaret?​

A) Margaret loses $100,000 when her house is damaged by a flood.
B) Alan gets a substantial raise of $25,000 a year.
C) Margaret remarries.
D) all of the above