关于伤寒沙门菌，错误的是

A．革兰染色阴性

B．均为显性感染

C．抗原结构复杂

D．不产生外毒素

E．感染后无并发症

I don't have _______ money, but I'm _______ busy. [ ]

A. too much, much too

B. much too, too much

C. too much, too much

D. much too, much too