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【单选题】
患者，男，42 岁。烧心1年 ，胸片、喉镜及胃镜均未见异常，24小时pH 监测提示阳性，该患者最可能的诊断是A.
咽喉炎
B.
胃食管反流病
C.
Barrett 食管
D.
肺部感染
E.
非糜烂性反流病
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A.
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B.
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C.
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B.
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C.
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