According to Newman, Why Were Postwar Parents More Fed Up

According to Newman, why were postwar parents more fed up with having their kids stay at home longer than baby boomers are?

A) Because these families typically ascribed to the homemaker mother and breadwinner father roles, mothers were ready to relax without their children when they reached adulthood.
B) Because these families had been through the great depression, they were less willing to spend their money on their adult children.
C) Because technology has greatly advanced in the last several decades, baby boomers are enjoying playing video games and watching movies with their adult children.
D) Because healthcare was not as widely available and life expectancy was lower, postwar parents wanted to enjoy their retirements without their children as soon as possible.