Which is true of the sternum?

• A. Jugular notch lies at the level of T4
• B. 2nd costal cartilage articulates separately with the manubrium and the body of the sternum
• C. sternohyoid attaches to the manubrium, below the 1st costal cartilage
• D. interclavicular ligament makes no attachment to the sternum
• E. posterior surface of the manubrium is completely covered with pleura