Kyle sold land on the installment basis for $100,000. His basis in the land was $70,000. Kyle received a $40,000 down payment and a real estate installment sale contract calling for $60,000 in additional payments in future years. In addition, Kyle paid $6,000 in commissions on the sale. What is the gross profit to be recognized in the current year? a) $0 b) $9,600 c) $12,000 d) 30,400