Some historians of science have argued that science moves forward not so much because of the insights of great thinkers but because of more mundance developments, such as improved tools and technologies.
(A)because of the insights of great thinkers but because of
(B)because of the insights of great thinkers as the results of
(C)because of the insights of great thinkers as because of
(D)through the insights of great thinkers but through
(E)through the insights of great thinkers but results from
ans:C
想請問b.c選項 不是很懂意思 謝謝