[单选题]

患者，男，66岁。平素纳呆胸闷，刻下症见头痛，昏蒙，胸脘满闷，呕吐痰涎，舌苔白腻，脉滑。治法宜

A.化痰降逆

B.平肝潜阳

C.养阴补肾

D.疏散风热

E.清热化痰