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: Pharmacology
[{'content': 'Which of the following is not a side effect of long-term use of PPI? \nSelect and explain. \nA. Hypothyroidism, B. Osteoporosis leading to hip fracture in women, C. Community acquired pneumonia, D. Clostridium difficile infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Hypothyroidism', 'role': 'assistant'}]