Determine the treatments in a three-factor experiment when

(a) factor A has levels low and high, factor B has levels wet and dry, and factor C has levels 10% and 20%.

(b) factor A has levels low, medium, and high, factor B has levels light and dark, and factor C has levels 10%, 15%, and 20%.

(c) factor A has levels low, medium, and high, factor B has levels low and high, and factor C has levels low and high.