H.W. a 72-year-old female was admitted to the orthopedic unit with symptoms of back pain and anxiety. What is her current Pulse Ox reading and oxygen supply at 7 am? a) 95% on 2l/nasal cannula b) 94% on 2l/nasal cannula c) 89% on 2l/nasal cannula d) 86% on 2l/nasal cannula