Sentence Correction

Proponents of the theory of spontaneous generation argued that simple living organisms sprang to life not through a recognizable reproductive process but came to life independently from non living matter.
a.sprang to life not through a recognizable reproductive process but came to life
b.did not spring to life through a recognizable reproductive process and came to life
c.did not spring to life through a recognizable reproductive process but came to life
d.sprang to life not through a recognizable reproductive process but
e.did not spring to life through a recognizable system of reproduction but had come to life

OA is D
I understand the use of verb tense agreement on this question but A could have been considered too.