Masson, Inc had the following activity during the last 3 years:

2016 2017 2018

Unit sales 10,000 8,000 12,000

Unit sales price $ 15 $ 15 $ 15

Production in units 10,000 10,000 10,000

Beginning inventory-units - 0 - - 0 - 2,000

Ending inventory-units - 0 - 2,000 - 0 -

Unit variable production costs $ 8 $ 8 $ 8

Unit S and A costs $ 0.50 $ 0.50 $ 0.50

Fixed overhead costs $30,000 $30,000 $30,000

Fixed S and A costs $20,000 $20,000 $20,000

1. Prepare income statements for each year using both the Full Costing and the Variable Costing methods.
2. Reconcile any difference in net income each year.