Which of the Following Is Consistent with Disengagement Theory

Which of the following is consistent with disengagement theory?

A) A company mandates that all employees must retire at age 65, and they are replaced with younger workers.
B) Douglas, who is 71 years old, is spending his retirement years working at a homeless shelter, going on senior tours around the country, and working as the president of a local senior's center.
C) Marvin who has recently retired from an intense career, becomes depressed and takes his own life.
D) Marsha, who is 72 years old, divorces her husband after 45 years of marriage.