Which of the following statements are true of the primary germ layers of the embryo? (Read carefully and select all of the correct statements.)

A)The ectoderm gives rise to the nervous system.
B)Mesoderm forms most of the liver and pancreas.
C)Bones come primarily from endoderm.
D)The lungs are epithelial tissue from the ectoderm.
E)The stomach lining is an inside surface and is of endodermal origin.
F)Most organs have tissues from all three germ layers.