Which of the following statements is/are correct as it relates to Medicare coverage? 1. Medicare Part A covers medical-related expenses, such as doctor's services. 2. Medicare Part B covers hospital and skilled nursing care services. 3. Medicare Part C/Supplemental Policies cover "gaps" in coverage (such as deductibles and co-insurance payments) under Medicare Parts A and B. 4. Medicare Part D covers prescription drugs. a. 1,2,3,4 b. 1,2 c. 3,4 d. 1, 2, 3