An Unfavorable Direct Materials Efficiency Variance and a Favorable Direct

An unfavorable direct materials efficiency variance and a favorable direct materials price variance might indicate which of the following?

A) Less expensive,inferior materials requiring more than the standard amount were used in production
B) Less expensive,inferior materials requiring less than the standard amount were used in production
C) More expensive,superior materials requiring more than the standard amount were used in production
D) More expensive,superior materials requiring less than the standard amount were used in production