Editing Master Feedback layers

Hi, I'm needing some clarification on how the feedback master works, when creating new layers for graded questions.

I've created several multiple choice, graded questions within my course.

Each multiple choice question has three layers: correct, incorrect, and correct answer.

The correct answer layer appears after the learner has made a predetermined number of attempts (but has not already selected the correct answer), in other words, the correct answer layer displays the correct answer if the user has not already gotten the question correct.

However, when attempting to use the feedback master to edit the correct answer layer, I'm not seeing a layer whose name (correct answer) that would correspond to the layer I've created within my multiple choice question.  There seems to only be two layers present in the feedback master which correspond to the layers I've created in my graded question.

So, two questions:

1) Which layer within the feedback master corresponds to the 'correct answer' layer that I've created within my graded question?

and 2) If there isn't a layer within the feedback master (called correct answer), to correspond to my correct answer layer, can this be added?

If not, what's the best way to edit the format of my correct answer only, without editing a layer I want to remain as-is (a separate layer, called correct).

Thanks!