Which of the following could be used as evidence for spontaneous generation?
a) Uncovered meat will give rise to maggots.
b) Gauze-covered meat will not give rise to maggots.
c) Shaking Pasteur's S-necked flasks did spoil the broth.
d) Flies lay eggs that develop into maggots.
e) The broth in Pasteur's S-necked flasks did not spoil.