The bowden corporation makes a single product. only one kind of direct material is used to make this product. the company uses a standard cost system. the company's cost records for june show the following data:
 number of units produced 10,000 
 material price variance $ 8,400 (favorable)
 material quantity variance $ 8,000 (unfavorable)
 actual direct material purchased and used 21,000 pounds
 direct materials standard price $ 8 per pound
 there were no beginning inventories of direct materials.
 the standard cost of direct material for one unit of output is:_________
 a) $2 per unit
 b) $16 per unit
 c) $8 per unit
 d) $10 per unit