An Older Adult Who Injured Her Knee Several Years Ago

An older adult who injured her knee several years ago tells the nurse that she has been managing the resulting intermittent pain with a prescription for propoxyphene (Darvon) .The nurse is concerned with this treatment plan, primarily because:

A) there are less expensive alternative analgesics available.
B) this medication can cause renal damage when used long term.
C) aspirin would likely be as effective in managing the pain.
D) the knee should not still be causing pain for the client.