Which of the following statements about the senior citizen population in the United States is true?

a. The highest expenditures on health care per capita occur with the older segment of the population.

b. The elderly make up a smaller percentage of the total population than 20 years ago.

c. Senior citizens do not hold much clout with legislators.

d. Senior citizens, as a group, have shorter lifespans than in previous decades.

e. The elderly consume one-half as much health care per capita as the rest of the population.