True coelom is the space between wall of alimentary canal and body wall enclosed by the layers of

1.
True coelom is the space between wall of alimentary canal and body wall enclosed by the layers of

1. Mesoderm on one side and ectoderm on the other2. Endoderm on one side and ectoderm on the other3. Mesoderm on both sides4. Ectoderm on both sides