Calistoga Produce estimates bad debt expense at 0.5% of credit sales. The company reported accounts receivable and allowance for uncollectible accounts of $471,000 and $1,650, respectively, at December 31, 2015. During 2016, Calistoga's credit sales and collections were $315,000 and $319,000, respectively, and $1,720 in accounts receivable were written off. Calistoga's adjusted allowance for uncollectible accounts at December 31, 2016, is:

a. $1,575.

b. $1,505.

c. $1,650.

d. $1,720.