白勇<>中一题

The capital of Bosnia-Herzegovina,Sarajevo's population on the eve of the First World War was 51,919.

A.Bosnia-Herzegovina,Sarajevo's population

B.Bosnia-Herzegovina is Sarajevo,whose population

C.Bosnia-Herzegovina  is Sarajevo, with a population

D.Bosnia-Herzegovina, Sarajevo having a population that

E.Bosnia-Herzegovina, the population of Sarajevo

答案是B.我想问的是,这里为什么用WHOSE呢,SARAJEVO是城市,不是人啊.也许这个问题有点幼稚,但我刚接触GMAT,所以觉得想不通,想多问问.谢谢. 

whose也可以指代物，gwd上有这个考点