A Researcher Tests Groups of High, Medium and Low Anxiety

A researcher tests groups of high, medium and low anxiety participants who have been permitted either low sleep or normal sleep before learning and being tested on a memory list of 15, 20, 30 or 45 items.
-3) The factorial design will be:

A) 3 x 2 x 5 unrelated
B) 2 x 3 x 5 related
C) 3 x 2 x 4 unrelated
D) 3 x 2 x 4 related