Final answer:
Medicare Part B includes an annual deductible, and the beneficiary is responsible for paying the deductible and a percentage of the costs.
Step-by-step explanation:
Medicare Part B includes an annual deductible, and the beneficiary is responsible for: b) Paying the deductible and a percentage of the costs. This means that the beneficiary must first pay the deductible amount out of their own pocket, and then they will be responsible for paying a percentage of the costs for the services they receive. For example, if the deductible is $100 and the percentage is 20%, the beneficiary would pay the first $100 plus 20% of the remaining costs.