Which of the Following Is Meant by the "1 Percent

Which of the following is meant by the "1 percent rule" of aging?

A) Our organ systems lose about 1 percent of function per year beginning at age 30.
B) We lose about 1 percent of our memory capacity every year beginning at age 50.
C) About 1 percent of the population older than age 65 has significant organ function decline.
D) About 1 percent of the population makes it to their 85th birthday.