题目：
紫癜性肾炎所致的咯血，下列哪项是错误的？（）
A.可有特征性皮疹
B.可有胃肠道症状
C.可有关节炎症状
D.血清抗肾小球基底膜抗体（抗GBM）升高
E.可有血清IgA增高
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错
紫癜性肾炎所致的咯血，下列哪项是错误的？（）A.可有特征性皮疹 B.可有胃肠道症状
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