Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labour-hours, and its standard costs per unit are as follows:

Direct materials: 5 kg at $10.00 per kg	$	50.00
Direct labour: 4 hours at $16 per hour		64.00
Variable overhead: 4 hours at $7 per hour		28.00
Total standard cost per unit	$	142.00

The company planned to produce and sell 20,000 units in March. However, during March the company actually produced and sold 24,600 units and incurred the following costs:

1. Purchased 164,000 kg of raw materials at a cost of $7.50 per kg. All of this material was used in production.
2. Direct labour: 57,000 hours at a rate of $17 per hour.
3. Total variable manufacturing overhead for the month was $653,220.

1. What is the materials price variance for March? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance.).)