Keystone Corporation sells a one product. Budgeted sales for the year are anticipated to be 640 units, estimated beginning inventory is 108 units, and desired ending inventory is 90 units. The quantities of direct materials expected to be used for each unit of finished product are given below.

Material A 0.50 lb. per unit @ $0.70 per pound

Material B 1.00 lb. per unit @ $1.70 per pound

Material C 1.20 lbs. per unit @ $1.00 per pound

The dollar amount of Material A used in production during the year is

a.

$528.70

b.

$311.00

c.

$224.60

d.

$217.70