Which of the following statements about taxonomy is NOT true?

A)In cladistics,a common ancestor and all its descendents that share one or more derived traits are placed in a single clade.
B)Analogous structures are derived from a common ancestral structure to perform the same function.
C)Biochemical data and the fossil record can be used to indicate the length of time since two species diverged from a common ancestor.
D)Homologous structures are derived from a single structure in the ancestor,although they may be adapted to different uses in the descendent species.