For each of the three items, (1) Depreciation, (2) Inventory, and (3) Installment sales, explain: a. Two

Question:

For each of the three items,
(1) Depreciation,
(2) Inventory, and
(3) Installment sales, explain:
a. Two acceptable accounting methods for reporting purposes.
b. How each of the two acceptable accounting methods identified affect current period income.