Answer:
The correct option is C,the actual cost of materials was less than the standard cost.
Step-by-step explanation:
Standard cost is the guesstimate cost of a process,material or item in a manufacturing outfit which is compared to actual cost such that variances between both can be further investigated.
In this case,favorable material purchase price variance is $380, while unfavorable materials quantity variance of $120, which implies that the net effect is a favorable material purchase price variance of $260($380 minus $120).
Intuitively,the closet option to the net variance impact, is that actual cost of material was less than the standard cost.