system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Most common malignant bone tumor -
assistant
The correct answer is  Ans. is 'b' i.e., Secondarieso Secondaries are most common malignant bone tumor,o Osteogenic sarcoma is the most common primary malignant bone tumor,o Osteoma is most common benign bone tumor.