Reardon Retail Company consists of two stores: A and B. During March, Store A had sales of $80,000, a contribution margin ratio of 25%, and a segment margin of $11,000. The company as a whole had sales of $170,000, a contribution margin ratio of 36%, and segment margins for the two stores totalling $36,000. If net income for the company was $15,000 for the month, what were the traceable fixed expenses in Store B?