单选题:以下关于变态反应的说法中,错误的一项是(  )。

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题目内容:
以下关于变态反应的说法中,错误的一项是(  )。 A.变态反应是机体对某些抗原初次应答后,再次接受相同刺激时,发生的一种免疫应答。
B.人体在接触致敏原(过敏原)即会出现变态反应。
C.人们日常遇到的皮肤过敏,皮肤骚痒、红肿,就是一种变态反应。
D.变态反应分为4型,临床最常见的是Ⅰ型变态反应。

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