During 2010, Martin Corporation sold merchandise costing $2,100,000 on an installment basis for $3,000,000. The cash receipts related to these sales were collected as follows: 2010, $1,200,000; 2011, $1,050,000; 2012, $750,000. If expenses, other than the cost of the merchandise sold, related to the 2010 installment sales amounted to $120,000, by what amount would Martin's net income for 2010 increase as a result of installment sales? $240,000 $360,000 $1,080,000 $270,000