Jolene Is Describing the Beginning and End of Middle Age

Jolene is describing the beginning and end of middle age.Based on the text,what might she say?

A) "It starts when people physically decline and ends when they have health problems."
B) "It starts at about age 40 and traditionally lasts until age 60 or 65."
C) "It starts at age 50 and lasts until people retire."
D) "It starts when people have children and ends when they physically decline."