單項(xiàng)選擇題某患牛兩后肢向前外伸直呈跨坐姿勢(shì),可診斷為()

A.兩側(cè)閉孔神經(jīng)麻痹
B.一側(cè)閉孔神經(jīng)麻痹
C.坐骨神經(jīng)麻痹
D.股神經(jīng)麻痹