已知某化合物在正己烷中的λ[img=~/QImg/2013-10-14-10-14-34/image010.jpg]=340nm,在水中的λ[img=~/QImg/2013-10-14-10-14-34/image010.jpg]=300nm,则引起该吸收的跃迁类型为

A、σ→σ[img=~/QImg/2013-10-14-10-14-34/image004.jpg]
B、n→σ[img=~/QImg/2013-10-14-10-14-34/image004.jpg]
C、π→π[img=~/QImg/2013-10-14-10-14-34/image004.jpg]
D、n→π[img=~/QImg/2013-10-14-10-14-34/image004.jpg]