What Is the Difference Between the Experience of a Midlife

What is the difference between the experience of a midlife transition and a midlife crisis ?

A) The midlife transition is experienced by women and the midlife crisis is experienced by men.
B) The midlife transition occurs after normal (expected) life changes and the midlife crisis is a response to unexpected life changes.
C) The midlife crisis occurs at the start of middle adulthood and the midlife transition occurs near the end of middle adulthood.
D) The midlife crisis does not resolve and the midlife transition does (although it can take a long time) .