A. Sarah would work 6 days a week if she liked it.
B. Sarah wishes she didn't have to work 6 days a week.
Feedback To express disappointment with the present situation we usually use the construction [ I + wish + Past Simple]. Other answers do not relate to the meaning.
C. If only Sarah had to work 6 days a week.
D. Sarah would work 6 days a week if she had to.