A Client with a Long Leg Cast Is Complaining of Knee

A client with a long leg cast is complaining of knee discomfort.Which nonpharmacologic intervention can the nurse use to help this client?

A) Apply ice to the knee over the cast.
B) Rub the knee of the non-casted leg.
C) Apply heat to the knee over the cast.
D) Rub the foot of the casted extremity.