In an experiment, a mouse lemur is challenged under various circumstances to identify which of two cups contains a mealworm. Based on lecture, which of these circumstances would give the lemur the highest chance of success?
A. When the mealworm could be seen and heard
B. When the mealworm could be seen and smelled
C. When the mealworm could be heard and smelled
D. All of the above are equally good
E. A and B are equally good and better than C