A firm books a revenue of $900,000 in December 2016. Based on previous experience, 5% of the sales are returned within 30 days. Returned products are resalable. How much should the sales return allowance be in December 2016?

$45,000

$0

$108,000

$63,000

The sales return allowance is calculated by multiplying the total revenue by the return rate.

Sales return allowance = $900,000 * 0.05 = $45,000

Therefore, the correct answer is $45,000.