Longview Hospital Performs Blood Tests in Its Laboratory

Longview Hospital performs blood tests in its laboratory.The following standards have been set for each blood test performed: During May, the laboratory performed 1, 500 blood tests.On May 1 there were no direct materials (plates) on hand;after a plate is used for a blood test it is discarded.Variable overhead is assigned to blood tests on the basis of standard direct labor-hours.The following events occurred during May: • 3, 600 plates were purchased for $9, 540
• 3, 200 plates were used for blood tests
• 340 actual direct labor-hours were worked at a cost of $5, 550
The direct materials purchases variance is computed when the materials are purchased.
The materials quantity variance for May is:

A) $1, 650 F
B) $1, 650 U
C) $550 U
D) $720 F