Answer:
D) Income of the following year will be understated
Step-by-step explanation:
When inventory is written down*, the value of the inventory decreases. In this case, since the goods were written down at $10, this increased cost of goods sold by $10. When the good is actually sold next year, and profits are only recorded at $12, then income is being understated by $5.
Income = sales revenue - COGS - other disposal costs = $30 - $10 - $3 = $17, not $12 like it was recorded.
*Inventory is written down when its replacement price lowers or when merchandise is lost or stolen.