Why do British politicians frequently portray the NHS as being endangered and vulnerable to the whims of the government of the day? a. The NHS's costs have increased at a more rapid pace than the U.S. health system. b. The NHS is highly unpopular and frustrating to the British people. c. The party in opposition often finds health policy a convenient means by which to focus criticism on the party in power. d. The Chancellor of the Exchequer has repeatedly failed to rein in costs over time