The nurse at an outpatient surgical clinic witnesses clients' signatures. When obtaining signatures, which clients can sign their own consent for a procedure/surgery? Select All That Apply.

A 72-year-old widow with dementia who needs a mastectomy for cancer removal

A 62-year-old with macular degeneration who is ordered a routine colonoscopy

A 7-year-old who needs an open reduction internal fixation (ORIF) of the right arm

A married 17-year-old who requires a cholecystectomy for relief of nausea and pain

A 16-year-old who is obtaining an elective breast reduction for back pain relief