Lowering Cooldown

Process of elimination? A difficult concept to comprehend? It's more of a common sense than a concept...

Here, let me do you a favor and quickly explain this difficult "concept".

You have two choices, A and B. One of these choices is the correct choice.
I tell you that choice B is the incorrect choice.
Therefore, choice A must be the correct choice, as there are no other choices that could correct.

Now it's your turn! Try this practice problem below:

You have two choices, C and D. One of these choices is the correct choice.
I tell you that choice C is the incorrect choice.
Which choice is the correct choice? Explain how you got to your answer. Be sure to double check your answer and check with a classmate. (5 points)