Sawyer Industries Inc. (SII) developed standard costs for direct material and direct labour. In 2019, SII estimated the following standard costs for one of their major products, the 30-litre heavy-duty plastic container. During July 2020, SII produced and sold 10,000 containers using 2,200 kilograms of direct materials at an average actual cost per kilogram of $25 and 1,050 direct manufacturing labour hours at an average actual wage of $15 per hour. July's direct manufacturing labour flexible-budget variance is ________.

A) $262.50 unfavourable

B) $262.50 favourable

C) $250.00 favourable

D) $487.50 favourable

E) $750.00 unfavourable