Indicate the effects of the following errors on each of the items listed in the column headings. Use the following symbols: O $=$ overstated, U $=$ understated, and NE $=$ no effect. Assume that the company does not use the direct write$-$off method to account for uncollectible accounts.

Gross Profit $=$ Sales $$ Cost of Goods Sold

Current Ratio $=$ Current Assets $-$: Current Liabilities

Receivables Turnover Rate $=$ Sales $-$: Average Accounts Receivable $($net$)$

Working Capital $=$ Current Assets $$ Current Liabilities