Which Child Would Not Be Labeled as Failure-To-Thrive

Which child would not be labeled as failure-to-thrive?

A) Any child below the third percentile for height and weight in his or her age range
B) A child who has inherited an abnormally short stature
C) A child who has displayed normally slow growth from birth
D) A child who has been ill for several months and is not the same height or weight as his or her agemates