【单选题】

Below are four groups of terms that are found in the passage. Which group contains at least one term that does not refer to the same thing as the other terms within the group
A．the new law, the bill, the drug bill, the prescription-drug legislation, the legislation

B．prescription-drug coverage, the new law, the drug bill, the prescription-drug legislation, the legislation
C．the drug bill, the bill, Medicare with prescription-drag coverage added, the prescription drug legislation, the legislation
D．the new law, the bill, the drug bill, Medicare with additions including prescription-drug coverage, the prescription-drug legislation