If a Firm Hires Labor for $4,000,pays Rent of $1,500,buys

If a firm hires labor for $4,000,pays rent of $1,500,buys raw materials for $6,000 from another firm,earns profits of $500,and sells its output for $14,000,the value added by the firm is _____.

A) $12,000
B) $8,000
C) $6,000
D) $2,000
E) $500