A Client Is Postoperative from a Left-Sided Mastectomy

A client is postoperative from a left-sided mastectomy.She says that the incision and the inner side of her arm from the armpit to the elbow are numb.Which is the nurse's best action?

A) Teach the client to avoid lifting heavy objects.
B) Measure the circumference of the client's left arm.
C) Reassure the client that this is an expected finding.
D) Notify the surgeon as soon as possible.