以葡萄糖为燃料的微生物燃料电池结构示意图如图所示。关于该电池的叙述正确的是

A．该电池能够在高温下工作     

B．电池的负极反应为：C₆H₁₂O₆+ 6H₂O-24e^-=6CO₂↑+24H⁺     

C．放电过程中，H⁺从正极区向负极区迁移

D．在电池反应中，每消耗1 mol氧气，理论上能生成标准状况下CO₂气体 

She is very dear to us. We have been prepared to do ______  it takes to save her life.

A．whichever

B．however

C．whatever

D．whoever