Reference: 11-02
the Litton Company Has Established Standards as Follows

Reference: 11-02
The Litton Company has established standards as follows:
Direct material 3 kg @ $4/kg = $12 per unit
Direct labour 2 hrs. @ $8/hr. = $16 per unit
Variable manuf. overhead 2 hrs. @ $5/hr. = $10 per unit
Actual production figures for the past year are given below. The company records the materials price variance when materials are purchased. $$\begin{array} { | l | l | l | } \hline \text { Units produced } & 600 & \\\hline \text { Direct material used } & 2,000 & \mathrm {~kg} \\\hline \text { Direct material purchased } ( 3,000 \mathrm {~kg} ) & \$ 11,400 & \\\hline \text { Direct labour cost } ( 1,100 \text { hrs. } ) & \$ 9,240 & \\\hline \text { Variable manuf. overhead cost incurred } & \$ 5,720 & \\\hline\end{array}$$ The company applies variable manufacturing overhead to products on the basis of direct labour hours.
-A favourable material price variance coupled with an unfavourable material usage variance would most likely result from:

A) the purchase of low quality materials.
B) problems with labour efficiency.
C) changes in the product mix.
D) problems with processing machines.