The Armstrong Corporation developed a flexible budget for its production process. Armstrong budgeted to use 12,000 pounds of direct material with a standard cost of $ 11 per pound to produce 10,000 units of finished product. Armstrong actually purchased 18,000 pounds and used 13,000 pounds of direct material with a cost of $24 per pound to produce 10,000 units of finished product. Given these​ results, what is​ Armstrong's direct material price​variance?
A. $234,000 unfavorable
B. $156,000 unfavorable
C. $234,000 favorable
D. $156,000 favorable