关于交叉配血下列说法正确的是
A.主侧加受血者血清与供血者红细胞
B.主侧加受血者红细胞与供血者血清
C.次侧加受血者血清与供血者红细胞
D.次侧加受血者红细胞与供血者红细胞
E.主侧加受血者血清与供血者血清
正确答案是A