Which of the following is NOT an advantage of having a true coelom?
A. Sperm and eggs can be stored before they are released. B. The digestive system can coil and provide greater surface area. C. Muscle contractions against the fluid chambers are absorbed and have no effect. D. Fluids here can assist respiration and circulation, and accumulate metabolic wastes. E. Complex organ systems can develop protected from damage and temperature changes.