Sanford Ltd produces a product with the following standard cost card Direct materials (20 kg) Direct labour (8 hours) Variable overhead (S hours) Fixed overhead (8 hours) S50.00 80.03 21.00 35.00 The fixed overhead rate is based on a standard monthly volume of 16457 units The actual results for the month of July 20x5 are as follows Direct materials purchased and used (325500 kg) Direct labour (90039 hours) Variable overhead Fixed overhead Units produced and sold $620000 1193143 320000 580000 15500 units What is Sanford's direct labour rate variance for July 20x5 (note: a negative number represents an unfavourable variance and a positive number represents a favourable variance)? Select one a. $292415 b $427573 . ?. $-292415-/. d. $-427573