How Does the Amount of Time That Working Parents Spend

How does the amount of time that working parents spend with their children compare with the amount of time parents spent with children 40 years ago?

A) Forty years ago, mothers spent much more time with their children than they do today.
B) Forty years ago, fathers spent much more time with their children than they do today.
C) Despite working more outside of the home today, both mothers and fathers spend at least as much time with their children than parents did 40 years ago.
D) Mothers have increased their time with children; there is no change in how much time fathers spend.