Which of the following statement is/are correct about a Medicare Savings Account (MSA) Plans? I. MSAs may have either a partial network, full network, or no network of providers.

II. MSA plans cover Part A and Part B benefits but not Part D prescription drug benefits.

III. An individual who is enrolled in an MSA plan is responsible for a minimal deductible of $500 indexed for inflation.

IV. Non-network providers must accept the same amount that Original Medicare would pay them as payment in full.