Considering Rh blood types, which of the below situations would result in maternal antibodies attacking the fetus?
a. Mom is Rh negative and fetus is Rh negative
b. Mom is Rh negative and fetus is Rh positive
c. Mom is Rh positive and fetus is Rh negative
d. Mom is Rh positive and fetus is Rh positive.
Answer: Mom is Rh negative and fetus is Rh positive