I can't decided___to buy a new bike or __a used oneA when ,findB whether ,to look forC how,look forD why,to look for

I can't decided___to buy a new bike or __a used oneA when ,findB whether ,to look forC how,look forD why,to look for
I can't decided___to buy a new bike or __a used one
A when ,find
B whether ,to look for
C how,look for
D why,to look for

I can't decided___to buy a new bike or __a used oneA when ,findB whether ,to look forC how,look forD why,to look for
选B
翻译：我不能决定到底是买一辆新自行车还是买一辆二手的.

D

B

B
我决定不了是否去买一辆新的自行车还是去找一辆二手的