求教885section20-7（没人解答过）

7.     As rare as something becomes, be it a baseball card or a musical recording or a postage stamp, the more avidly it is sought by collectors.

(A) As rare as something becomes, be it

(B) As rare as something becomes, whether it is

(C) As something becomes rarer and rarer, like

(D) The rarer something becomes, like（E）whether ……or

(E) The rarer something becomes, whether it is

D为什么错？

Thanks！