Bottum Corporation, a manufacturing Corporation, has provided data concerning its operations for May. The beginning balance in the raw materials account was $23,000 and the ending balance was $42,000. Raw materials purchases during the month totaled $69,000. Manufacturing overhead cost incurred during the month was $114,000, of which $2,600 consisted of raw materials classified as indirect materials. The direct materials cost for May was:

a. $69,000

b. $50,000

c. $88,000

d. $47,400