____ is mentioned above, the number of the cattle here has been

____ is mentioned above, the number of the cattle here has been limited to 200
A、It
B、Which
C、That
D、As
【正确答案】：D
【题目解析】：【考点点击】本题考查定语从句关系代词的选择。【要点透析】关系代词as用来引导定语从句,置于句首,有“正如,如同”的意思,指代后面整个主句内容,即“这儿的牛不得超过200头”。