Why Would a Pediatrician Measure Both Height and Weight Each

Why would a pediatrician measure both height and weight each time a child goes to their office?

A) It is a procedure that has been habitually practiced.
B) It is a non-threatening way to begin a physical, especially if shots are to be given.
C) Most parents like to hear about their child's growth patterns.
D) Deviations can indicate problems in health that affect physical growth.