Case Based Critical Thinking

Case Based Critical Thinking
Mark's team is working on complex artwork for a 120-page corporate annual.Mark tells his team to be certain that all the artwork that they create is created with layers.His Photoshop gurus are experts at using layers in Photoshop, but Mark is curious to see how they will translate those abilities to working with layers in Illustrator.
-Mark's team is discussing moving objects between layers.Mark tells them that, of the three options available, the quickest is:

A) dragging the Selected art icon
B) using the Send to Current Layer command
C) copying/pasting between layers