Which of the following statements are true of the rib cage? (Read carefully and select all of the correct statements.)

A)The manubrium articulates with all of the true ribs.
B)During inhalation the ribs are pulled up and in.
C)All of the ribs articulate with the thoracic vertebrae.
D)The most inferior part of the sternum is the xiphoid process.
E)The floating ribs help protect the heart.
F)The true ribs and false ribs have costal cartilages.