Lester's has $33,600 in sales, $17,200 in cost of goods sold, $2,300 in depreciation, $980 in interest expense, and $5,800 in selling, general, and administrative expenses. The firm owes no taxes for this year. What is the amount of the period costs that are included in the operating cash flow?

A. $25,300

B. $3,280

C. $23,980

D. $23,000

E. $5,800