I Carried Out a Series of Experiments Testing the Effect

I carried out a series of experiments testing the effect of caffeine on mice.I used two mice.I fed one mouse caffeinated water and fed the other plain water.I then measured the ability of each mouse to find its way through a maze.I timed their progress.My results were exciting and conclusive,the caffeinated mouse found his way through the maze much more rapidly and accurately than the noncaffeinated mouse.I sent my results to a peer-reviewed journal but they rejected my paper.They said the results were not valid.Why?

A) I should have let the mice go through the maze at different times.
B) I should have given the mouse different amounts of caffeine.
C) I didn't use the right form of caffeine.
D) I didn't have enough mice in the study.
E) None of the above.