14) The standard cost card of a particular product specifies that it requires 4.5 direct labor-hours at $12.80 per direct labor-hour. During March, 2,300 units of the product were produced and direct labor wages of $128,300 were incurred. A total of 11,700 direct labor-hours were worked. The direct labor variances for the month were: Labor Rate Variance Labor Efficiency Variance A) $4,180 F B) $4,180 F C) $21,460 F D) $21,460 F $14,804 U $ 17,280 U $14, 804 U $17, 280 U Option A Option B option C Option D Solution Option D .