Answer:
C. $26,000
Explanation:
The total non-operating revenue for the given accounting period can be calculated by adding the bank interest to the operating revenue and then subtracting the sales discounts and sales returns.
Non-operating revenue = (Operating revenue + Bank interest) - (Sales discounts + Sales returns)
Non-operating revenue = ($42,000 + $1,000) - ($12,000 + $5,000)
Non-operating revenue = $43,000 - $17,000
Non-operating revenue = $26,000
Therefore, the total non-operating revenue for the given accounting period is $26,000.