Suppose Stanley's Office Supply purchases 50,000 boxes of pens every year. Ordering costs are $100 per order and carrying costs are $0.40 per box. Moreover, management has determined that the EOQ is 5,000 boxes. The vendor now offers a quantity discount of $0.03 per box if the company buys pens in order sizes of 10,000 boxes. Determine the before-tax benefit or loss of accepting the quantity discount. (Assume the carrying cost remains at $0.40 per box whether or not the discount is taken.)

A. $1,000 loss
B. $1,000 benefit
C. $500 loss
D. $500 benefit
E. $0 (The change would not affect profits.)