This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'A 40 year old female patient presents with excessive bleeding. Patient gives a history of road traffic accident 5 hours ago and had a lacerated wound on lower back region. Blood grouping test reveals presence of Anti A antibody, Anti B antibody, Anti H antibody and Anti Rh D antibody in the serum. This patient can receive transfusion from a donor having blood group- \nSelect and explain. \nA. O positive, B. O negative, C. AB positive, D. Bombay blood group', 'role': 'user'}, {'content': 'Answer: D \nExplanation: H substance is genetically different from ABO but is a precursor of\xa0A and B antigens.\nAn O group individual who inherits A or B genes but fails to inherit\xa0H gene from, either parent is called Oh phenotype or Bombay blood\xa0group.\nPeople with bombay blood group can receive blood only from the same blood group and its a universal donor.', 'role': 'assistant'}]