AP EAMCET Medical 2018 Shift 2 Paper

Study the following statements
A) The alleles tor RH antigen are located on ditierent loci on cliromosome 9
B) Three alleles of a single gene express ABO blood types in man
C) The erytlnoblastosis foetalis is caused due to IgM type antibodies
D) Isoagglutinogens are glycolipids
Choose the incorrect statements from the above