According to the Study Guide PowerPoint, Which Statement or Statements

According to the Study Guide PowerPoint, which statement or statements below is/are correct.

A) Long-term care institutions can be considered as the health care delivery system for all elderly Americans.
B) The clients or patients of long-term institutions only include persons who are 65 or older.
C) While elevated economic conditions have made the quality of life better for most Americans over time, it is the improvements in health care which have extended life:
D) a and b are true
E) b and ca art true
F) a, b and c are true
G) None of the above are true