He had criminal record ----theft

选择A,for在英语中表示说明一种原因,as在表示这种意思的时候只能引领句子.
并且A选项在网上有佐证.
http://blog.sina.com.cn/s/blog_4cf0a655010008am.html
可以看这里的第42个句子的后半句.
42．当他得知他儿子有偷窃的犯罪纪录时非常震惊.
He was shocked when he was told that his son had a criminal record for theft.