39. Albert: How does this sound? Wanted: male student or young professional for bright, sunny room in mixed flat-share.Must be clean, tidy and easy-going. Close to shops, pubs and buses. Reasonable rent,...Gina: Shouldn’t we say something about the cat? He might be allergic.
Albert: Ooh, yeah, good point.
What are they doing? They are writing __________.
(A) an advert to share their flat
(B) a note left on their fridge
(C) a reminder to their landlord
(D) a sales poster to promote some items。