单项选择题

宿有喘病,又感风寒,症见恶风发热,汗出头痛、咳喘,脉浮缓者,治疗应首选的方剂是()

A.桂枝汤
B.桂枝加厚朴杏子汤
C.桂枝加葛根汤
D.桂枝加桂汤
E.桂枝加芍药汤