When the Mid-Upper Arm Circumference and Triceps Skinfold of an 82-Year-Old

When the mid-upper arm circumference and triceps skinfold of an 82-year-old man are evaluated,which is important for the nurse to remember?

A) These measurements are no longer necessary for the elderly.
B) Derived weight measures may be difficult to interpret because of wide ranges of normal.
C) These measurements may not be accurate because of changes in skin and fat distribution.
D) Measurements may be difficult to obtain if the patient is unable to flex his elbow to at least 90 degrees.