The Most Obvious Characteristic of Annelids Is the Repeated Segments

The most obvious characteristic of annelids is the repeated segments that make up their bodies.They also have a complete digestive system,and a coelom.Which of the following is true of an annelid?

A) They have an open circulatory system.
B) They have cephalization and an open circulatory system.
C) Their gut is separated from their body wall and they have cephalization.
D) They have cephalization.
E) Their gut is separated from their body wall.