单项选择题

He asked the question not so much because of his curiousity as because of his desire for knowledge.

A.他问这个问题不是出于求知欲而是出于好奇心。
B.他提出这个问题与其说是出于好奇心不如说是出于求知欲。
C.他问这个问题不是出于好奇心而是出于对知识的渴望。
D.因为对知识的渴望与好奇,他问了这个问题。