Since the Late 1990s, Which of the Following Is MOST

Since the late 1990s, which of the following is MOST accurate about participation in the labor force by people aged 65 and older:

A) steadily decreasing
B) steadily increasing
C) steadily increasing and moving more toward full-time work rather than part-time work
D) steadily decreasing and moving more toward part-time work rather than full-time work