The correct options are
A Housework is an unpaid work.
B Housework is physically demanding.
Housework is considered as insignificant and easy. Hence, only women are expected to do it. It is not considered as 'work' and therefore the efforts given into taking care of a house go invisible.
However, we must realise that housework involves a wide range of tasks right from fetching water, cleaning, cooking to taking care of the old and sick members of the family. A houseworker works throughout the day without a break. Hence it is physically demanding.
Also, we should respect the women in our family for taking care of the house, and even men should help them whenever the need be.