Read the following context and choose the best option to answer the question.
Context: I have cleaned windows , scrubbed floors and bathrooms and kitchens and all manner of other unsightly things and hoovered lots of small crunchy things that were beginning to stick to the bottom of my socks . I have been a true martyr to the cause . Despite this it appears I have been failing dismally on all counts . Every single meal I have cooked has apparently been inedible shite .
Question: I have been a true martyr to the cause involves what type of cause ?
Options: 
A. It refers to keeping the children fed at the school .
B. It is the " cause " of housekeeping and cleaning a home .
C. It means volunteering at the janitorial closet charity .
D. None of the above choices .


B