Regarding Time and Effort Spent to Feed Oneself and One's

Regarding time and effort spent to feed oneself and one's family on a forager diet, Lee discovered (using !Kung data) that:

A) children are expected to forage for themselves from about the age of four.
B) men work twice as many hours as women per week.
C) both men and women work about 'half time' (compared to the standard US 40-hour work week) to hunt and gather enough food.
D) men and women work full time hours per week (c.40 hours) to hunt and gather enough food without assistance from the children and the elderly.
E) All answers are wrong; Lee never did any time use studies.