This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiotherapy & Chemotherapy, Subject name: Gynaecology & Obstetrics
[{'content': 'Absolute contraindication of hormone replacement therapy is: \nSelect and explain. \nA. Thrombosis, B. Fibrocystic disease, C. Fibroadenoma, D. Hemorrhage', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is a, i.e. ThrombosisRef: Novak 15th/ed, p1245; John Hopkins Manual of Obs and Gynae 4th/ed, p510MnemonicA = Active liver disease/or Gallbladder diseaseB = Undiagnosed vaginal bleedingC = Cancers of endometrium and breastD = Deep vein thrombosis', 'role': 'assistant'}]