Which of the Following Is NOT a Statement About Metamerism

Which of the following is NOT a statement about metamerism?

A) The insect head,which appears today to be just one segment,is thought to have evolved from many segments with the "legs" of those segments becoming the modern insects' mouthparts
B) Millipedes have two pair of legs per segment and centipedes have one pair per segment;some evolutionarily biologists suggest two segments may have become fused to form one with two pair of legs each
C) Leeches appear to have many external segments but internal inspection reveals fewer segments partitioned by full body septa
D) Each time a rattlesnake sheds its skin,it adds another segment to its tail rattle