This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to set up columns in illustrator
Open the adobe illustrator application.
Choose to either open an existing document or create a new print document in the dialogue box that appears after opening the program.
Create a new layer for your text using the layers palette, if you have not created a text layer already.

Available choices: (a). To access the layers palette, click on " windows " in the top horizontal toolbar, then select " layers " from the drop down menu. Click the " add new layer " button on the bottom of the layers palette box. (b). Click " save space " to save the new layer you have created. Right click on " layers "] " add all layers ". (c). If not you will have to create a new document. Select the layers palette, if you've created a text layer, from the dialog box. (d). Choose your text subject : Put it in the layer palette. You can use as many layers as you want.
The answer is:
(a).