I read about it in some book or other,does it matter_____it was?(_英语解答

I read about it in some book or other,does it matter_____it was?
(A )where (B)what (C)how (D)which顺便解释并翻译一下

人气：326 ℃　时间：2020-03-30 20:02:22

解答

D
我在某本书里读到过,具体哪本书重要么?
which 是指 which book