To minimize collection float, a firm should do which of the following?

I. Deposit its collections at least daily

II. Make sure all checks it receives at the sales counter are properly dated and signed

III. Pay its bills in a more timely manner

IV. Eliminate its regional lockboxes and have only one central lockbox located near the firm's home office

I and II only

III and IV only

II, III, and IV only

I, II, and III only

I, II, III, and IV