From the passage, we can learn that the reason why the ape could not get the banana if the

A. that the ape was unable to find where the stick was
B. that the ape forgot about the banana when it turned around to find the stick
C. that the ape didn't see the banana and the stick in the meanwhile and it couldn't remember the banana long enough to get the stick and use it
D. that the ape was not clever enough to catch sight of the banana and the stick at the same time