1. (单选题) 设在 [0,1) 上 f(x) 二阶可导,且 f′′(x)>0 ,则 A、f′(0)<f′(1)<f(1)−f(0)B、f′(0)<f(1)−f(0)<f′(1)C、f′(1)<f′(0)<f(1)−f(0)D、f(1)−f(0)<f′(1)<f′(0)