During the most recent month, the following activity was recorded: a. 28,500 millilitres of material was purchased at a cost of $0.26 per millilitre. b. All of the material was used to produce 3,120 bottles of Clean-All. c. 700 hours of direct labour time was recorded at a total labour cost of $8,400. Assume that instead of producing 3,120 bottles of Clean-All during the month, the company produced only 2,000 bottles, using 24,500 millilitres of material. (The rest of the material purchased remained in raw materials inventory.) Required: Compute the direct materials price and quantity variances for the month. (Indicate the effect of each variance by selecting "F" for favourable, "U" for unfavourable, and "None" for no effect (i.e., zero variance).)