When Compared to Traditional Opioid Analgesia,patient Controlled Analgesia May Provide

When compared to traditional opioid analgesia,patient controlled analgesia may provide adequate pain control,but there is also

A) an increased risk of side effects such as sedation, pruritus, and gastrointestinal problems
B) an increased risk of tolerance and physical dependence
C) decreased patient satisfaction with the PCA technique
D) all the above are true
E) none of the above are true