Suppose at the End of the Year Before Any Adjusting

Multiple Choice

Suppose at the end of the year before any adjusting entries,a company has a balance in Allowance for Uncollectible Accounts of $5,000 (debit) .During the year,the company reported the following amounts:
Credit sales to customers = $550,000
Cash collections from customers = $540,000
Actual bad debts = $20,000
What was the balance of Allowance for Uncollectible Accounts at the beginning of the year?

A) $10,000.
B) $20,000.
C) $15,000.