In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to treat a finger hit by a hammer [title] Check for swelling. [step] Your finger will likely swell no matter how hard you hit it. This is the most common response to such trauma. <sep> (A) Swelling will be a slightly more common reaction to injury. Use a splint to allow swelling to slowly fall back into place, as striking the knuckle may cause it to flare up. (B) Swelling will begin to decrease after the injury occurs, and scar tissue will develop even more, forming patches of scar tissue along the edge of the finger. Swelling from a bruise can manifest itself as red, scaly patches on the fingertip or the area surrounding the bruise. (C) If the hit wasn't too forceful, your finger may just swell for a couple of days. If the only symptom you see is swelling, place an ice pack on your finger to help relieve the swelling and pain. (D) The swelling might be acute or come and go depending on how much blood you have. If it's swelling, it means your finger needs to visit a doctor.
C