During November, the company made 4,000 units and incurred the following costs: Direct Materials Purchased Direct Materials Used Direct Labour Used 8,100 litres at $3.10 per litre 7,600 litres 2,200 hours at $8.25 per hour Actual Variable Manufacturing Overhead $4,175 The company applies variable manufacturing overhead to products on the basis of direct labour hours. What was the materials price variance for November? $810 favourable. $810 unfavourable. $2,310 favourable. $2,310 unfavourable.