Please choose the correct ending to complete the given sentence: Health: [header] How to diagnose bone cancer [title] Pay attention to bone pain. [step] One of the main symptoms of bone cancer is pain in the affected bone. It often grows worse over time.

Ending1: You may notice the pain more at certain times, such as at night or when you're using the affected area. [substeps] You might start limping if the cancer is in a leg bone. Ending2: Whether the pain is from a bone tumor or it is due to cancer, bone pain produces a sharp pain that washes over the joint. This pain is constant and not alleviated by surgery. Ending3: Each time a finger or hand or foot is moved, it can become affected. The pain may reach the joint or tendons of the affected hand, causing significant numbness or tingling. Ending4: Pain is a symptom of a variety of diseases, so you have to look for signs that your body is trying to suppress what is known as " bone intolerance. " begin your examination by going straight to the bone.

Answer format: ending1/ending2/ending3/ending4