Robert is said ____ abroad,but I don't know which country he

Robert is said ____ abroad,but I don't know which country he studies in
A.to have studied B.to be studying
那么答案是不是错了呢?如果原文是I don't know which country he studied in 前面才应该是 is said to have studied
而现在是I don't know which country he studies in时态是一般现在时了,那么答案是不是应该改为B