If this book is not yours,( ) can it be?A,what else B,who else C,which else D,who else's 选哪个?

问题描述:

If this book is not yours,( ) can it be?A,what else B,who else C,which else D,who else's 选哪个?

D
句子中提到的是谁的书,所以应该用whose 或者who else‘s