If Pasteur Had Done His Experiments Investigating Spontaneous Generation in a Horse

If Pasteur had done his experiments investigating spontaneous generation in a horse stable,

A) the results would probably have supported the idea of spontaneous generation.
B) the results would probably not have supported the idea of spontaneous generation.
C) the results would probably been the same as those obtained in a laboratory.
D) the results would probably have supported the idea of spontaneous biogenesis.
E) it would probably have taken several years to obtain any results.