Answer: A
Step-by-step explanation:
Carryforward Loss is a principle which deducts the operating loss in a business year as an expense from the operating income of subsequent years. This is to reduce the tax a business pays, if the business had suffered losses in previous years.
Businesses can carryforward their loss into subsequent years for up to 20 years but there is a cap on the amount they can deduct. The maximum loss deductible is 80% of the operating income in any given year.
The operating income in the third year is $25,000

=$20,000