Based on the following information, what would be recorded as the purchase discount if the invoice is paid within the discount period?
1. $5,000 of merchandise inventory was ordered on April 2, 2007
2. $2,000 of this merchandise was received on April 5, 2007
3. On April 6, 2007, an invoice dated April 4, 2007, with terms of 2/10, net 30 for $2,150 which included a $150 prepaid freight cost, was received.
4. On April 10, 2007, $500 of the merchandise was returned to the seller.
a) $100
b) $30
c) 43
d) 33