The story of ________ American South will be one of hope and success with some signs that ________ new, different South is coming out of its dark past.

A．the; a

B．an; a

C．不填; a

D．an; the

某患者因喉癌颈淋巴结转移行左侧根治性颈清扫术。术后4小时出现憋气，左侧胸痛。查体：气管套管通畅，负压引流少许血，皮下无气肿。左侧胸廓饱满，呼吸音低，叩诊呈鼓音。该患者最有可能出现哪种并发症（）。

A.术腔内出血

B.皮下气肿

C.心衰

D.空气栓塞

E.气胸