A business currently sells mobile phones in the domestic market for $80. The cost of the phones includes $50 variable cost per unit and $20 fixed cost per unit. A bid is received from an overseas customer for 1,000 phones at a price of $60 per phone. An additional 10% export fee on price would be assessed to the mobile phone company for overseas sales. What would be the differintial income or loss from accepting the overseas bid?
A. $4,000 loss
B. $14,000 loss
C. $4,000 income
D. $10,000 income