Which Statement Is True About Assistive Devices to Aid Older

Which statement is true about assistive devices to aid older adults with impaired mobility?

A) When using a walker, armless chairs provide more ease when moving from sitting to standing.
B) Assistive devices do not contribute to falls and injuries.
C) Older adults save money by adapting assistive devices given to them from their friends.
D) A walker is most useful for unilateral disabilities, but not for bilateral problems.