This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': '24 yr old woman walking up experiences pain in the heel which decreases on walking down. X-ray shows bone spur. Diagnosis \nSelect and explain. \nA. Plantar fasciitis, B. Calcaneal exostosis, C. Osteoyelitis of calcaneum, D. Achillis tendinitis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Heel pain when walking uphill or upstairs is typical of Achilles tendinitisOther three options can also cause heel pain, but a pain in these conditions has no relation to going up or down. It is consistent throughout(Refer: Manish Kumar Varshney's Essential Ohopedics Principles & Practice, 1st edition, pg no. 919)", 'role': 'assistant'}]