Morty Has Just Taken the Social Readjustment Rating Scale (SRRS)

Morty has just taken the social readjustment rating scale (SRRS) .He indicated that he has recently suffered from the life change that bears the highest number of life change units.What has Morty recently experienced?

A) he was fired from his job of 20 years
B) the death of his mother or father
C) he's been sentenced to a term in jail
D) the death of his husband