by letter how each of the following usually should be classified. If an item should appear in a note to the financial statements, use the letter $"$N$"$ to indicate this fact. If an item need not be reported at all on the balance sheet, use the letter $"$X$."$

$1.$ Prepaid insurance.

$2.$ Stock owned in another company.

$3.$ Unearned service revenue.

$4.$ Advances to suppliers.

$5.$ Unearned rent revenue.

$6.$ Preferred stock.

$7.$ Additional paid$-$in capital on preferred stock.

$8.$ Copyrights.