During May, Joliet Fabrics Corporation manufactured 630 units of a special multilayer fabric with the trade name Stylex. The following information from the Stylex production department also pertains to May. Direct material purchased: 19,300 yards at $1.51 per yard $ 29,143 Direct material used: 10,800 yards at $1.51 per yard 16,308 Direct labor: 3,400 hours at $9.28 per hour 31,552 The standard prime costs for one unit of Stylex are as follows: Direct material: 20 yards at $1.48 per yard $ 29.60 Direct labor: 5 hours at $8.00 per hour 40.00 Total standard prime cost per unit of output $ 69.60 Required: Compute the following variances for the month of May. (Indicate the effect of each variance by selecting "Favorable" or "Unfavorable". Select "None" and enter "0" for no effect (i.e., zero variance)..