1. The standard costs and actual costs for direct materials for the manufacture of 2,230 actual units of product are as follows:

   Standard Costs
   Direct materials	2,230 kilograms at $8.70
   Actual Costs
   Direct materials	2,300 kilograms at $8.20

   The direct materials quantity variance is

   a.$487 favorable

   b.$609 unfavorable

   c.$609 favorable

   d.$487 unfavorable