You can find whatever you need at the shopping centre, _____ is always busy at the weekend. [ ]

A. that

B. where

C. what

D. which

某报检员李某因工作需要脱离了报检岗位，其所属企业要收回其报检员证交当地检验检疫机构，但李某认为企业无权收回其报检员证，这种想法是否正确。( )