for every 1ml of extra blood entering maternal circulation 10ug of anti-D is given additionally… But that option is not there in this question… Kindly clear my confusion!
300 mcg dose is sufficient enough to neutralize 15ml of fetal RBC or 30 ml fetal whole blood. Now divide all these 3 numbers with 30 you will get the answer(A)
Normal hematocrit considering 50%,
1ml blood=0.5ml RBC