单项选择题

His academic record was constantly maintained at the top level, which is resulted from his devotion to study and intelligent nature.()

A.他的学习成绩一直名列前茅,这归功于他对学习的投入和天生的聪慧。
B.他的学术记录一直都放在最高处,这归功于他天生的聪慧和努力学习。
C.他的学习成绩一直名列前茅,结果,他对学习的投入更大了。
D.他的学习记录一直没人打破,这并不归功于他站的高看的远以及天生的聪慧。