Determine the treatments in a two-factor experiment when

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

(b) factor A has levels 10%, 15%, and 20% and factor B has levels water, alcohol, glycerine.

(c) factor A has levels low and high and factor B has levels 250◦, 300◦, 350◦, and 375◦.