Read the text and answer.
We have a problem at home. My sister and I never agree on the chores. She thinks I should do more because I am older. I think we should divide them equally. Our parents say we should make a schedule. Today, we argued about who will clean the bathroom. She said, "I cleaned it last week, so it's your turn." I said, "But I vacuumed the whole house yesterday!"
What is the main problem in the text?
A)The sister is too lazy to do chores.
B)They cannot agree on who does which chore.
C)The parents do not help with chores.
D)The vacuum cleaner is broken.