Multiple choice When can Erythroblastosis foetalis occur? Man is Rh positive and woman is Rh negative Man is Rh positive and woman is Rh positive Man is Rh negative and woman is Rh negative Man is Rh negative and woman is Rh positive Blood group of the man is O positive Reveal answer Fill a bubble to check yourself A Correct answer Explanation Erythroblastosis foetalis can occur when man is Rh positive and woman is Rh negative.