消费者对农产品购买行为的类型（）

A.习惯性

B.寻求多样化购买行为

C.化解不协调购买行为

D.复杂购买行为

Just use this room for the time being, and we'll offer you a larger one ________ it becomes available.[ ]

A. as soon as  

B. unless

C. as far as  

D. until