Discuss the appropriate treatment in the financial statements of each of the following.

(a) Gain on sale of investment securities.

(b) A profit-sharing bonus to employees computed as a percentage of net income.

(c) Additional depreciation on factory machinery because of an error in computing depreciation for the previous year.

(d) Rent received from subletting a portion of the office space.

(e) A patent infringement suit, brought 2 years ago against the company by another company, was settled this year by a cash payment of $725,000.

(f) A reduction in the Allowance for Doubtful Accounts balance because the account appears to be considerably in excess of the probable loss from uncollectible receivables.