on july 1st, 2013 Foster company sold inventory to slate corporation for $300,000. Terms called for a down payment of $75,000 & three annual installment payments of $75,000 due on each july 1, beginning in 2014. The inventory cost Foster $120,000. The company uses a perpetual inventory system. 1.) The computed gross profit to be recognized from the installment sale in 2014, 2014, 2015, and 2016 using the point of delivery method is $180,000, all of which is recognized in 2013. Can you tell me why all of the $180,000 is recognized in 2013 and -0- is recognized in the following years