可引起血清铁增高的情况有（）

A.缺铁性贫血

B.消化性溃疡

C.恶性肿瘤

D.月经过多

E.铁粒幼细胞性贫血

Our English teacher is wearing a gold watch, ________are made of small diamonds

A．whose the hands

B．of which hands

C．the hands of which

D．the hands of whom