小陷胸汤的主治病证是（）

A.痰热犯肺证

B.胆胃不和证

C.肺气上逆证

D.痰热结胸证

E.痰壅食滞气逆证

Good evening, Professor Hardy. Good evening, John. Come in, please. Thank you, I hope I am not interrupting you. No,（）

A.thank you 

B.not at all  

C.thanks

D.let it alone