81 65 歲女性,右膝關節疼痛,X 光片(anterposterior radiograph)檢查如下圖。最可能的診斷為:(A)類風濕性關節炎(rtheumatoid arthritis)(B)乾癬性關節炎(psoriatic arthritis)(C)骨性關節炎(osteoarthritis)(D)痛風性關節炎(gouty arthritis)