Under the LIFO retail method, we determine that:. a) a new layer of inventory has been added during the period if the ending inventory at retail is greater than the beginning inventory at cost.
b) the ending inventory at retail is greater than the beginning inventory at retail.
c) the ending inventory at retail is less than the beginning inventory at retail.

the ending inventory at retail is greater than the beginning inventory at retail

Explanation:

In the Last-In-First-Out(LIFO) method, it is assumed that the units that are sold are the ones that were recently bought.

Under the LIFO retail method, to determine a new layer at retail, the beginning inventory at the retail will have to be deducted from the ending inventory at retail.

This means that a new layer of inventory will be added when the ending inventory at retail is greater than the beginning inventory at retail.

answer; measurable outcome;