The most likely ancestors of the chordates are considered to be echinoderms because
A) both groups reproduce sexually and asexually.
B) both groups exhibit similar predatory behaviors.
C) embryos of echinoderms and chordates are deuterostomes.
D) adult echinoderms and adult chordates display similar characteristics.
E) the nervous system of echinoderms is similar to that of chordates.
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