please help me in understanding this. the options are as follows: F, I, O, (F), (I), (O)

6 Select a letter to mark each item in the following list as a cash flow from Operating, Investing, or Financing activities. (Indicate the effect of the cash inflow or outflow by selecting a letter with parentheses for a cash outflow or a letter without parentheses to indicate a cash inflow.) 0.66 points 1 . Cash paid to purchase land 2. Cash collected from clients eBook 3. Cash received from selling equipment 4. Cash paid for dividends 5 Cash paid to suppliers Print 6. Cash received from issuing stock References