A client is at risk for lung cancer asks about the reason for having a computed tomography (CT) scan as part of the initial exam. What is the nurse's best response? "A CT Scan is:
A. Far superior to magnetic resonance imaging for evaluating lymph node metastasis."
B. Noninvasive and readily available."
C. Useful for distinguishing small differences in tissue density and detecting nodal involvement."
D. Used to distinguish a malignant from non-malignant adenopathy."