Marisol and Frank, both age 67, were riding their bikes on a paved trail by their home. Franks hat flew off his head while riding and he tumbled over the handlebars trying to catch it. Frank spent four days in the hospital with a broken arm and hip but had no out-of-pocket cost for the hospital bill. What type of coverage did Frank have that made this possible?Group of answer choicesMedicare Part A.Medicare Part B.