Brickman Corporation uses the allowance method to account for uncollectible receivables. At the beginning of the year, Allowance for Bad Debts had a credit balance of $1000. During the year, Brickman wrote off uncollectible receivables of $2,100. Brickman recorded Bad Debt Expense of $2,700. What is Brickman's year-end balance in Allowance for Bad Debts?

A: $1,600
B: $4,800
C: $3,700
D: $600

Ans: A: $1,600