Which of the following are issues of concern in developing pay for performance ("P4P") incentives in a public insurance program? HINT: There may be more than one correct answer - select all you believe appropriate. Group of answer choices Will P4P encourage adverse selection of patients in order to achieve P4P goals? Will a P4P system decrease access for the sickest, most vulnerable populations? P4P will encourage the sickest patients to get less care and so reduce their costs. P4P will encourage providers to bill for more services and induce more demand