For the month ended January $31,$ indicate the $($i$)$ gross profit percentage, $($ii$)$ number of units in ending inventory, and

$($iii$)$ cost per unit of ending inventory.

If OTP had used the percentage of sales method $($using $2\%$ of Net Sales$)$ rather than the aging

method, what amounts would OTC's January financial statements have reported for $($i$)$ Bad Debt Expense and $($ii$)$

Accounts Receivable, net?

If OTP had used LIFO rather than FIFO, what amount would OTC have reported for Cost of Goods Sold on $01/10?$