Regarding the ribs:

• A. the 1st costal cartilage articulates with the manubrium by a synovial joint
• B. the radiate ligament has two bands, upper and lower
• C. the typical ribs are 3rd to 10th
• D. the groove for the subclavian artery is anterior to the scalene tubercle on the 1st rib
• E. the angle of the 2nd rib is the most posterior part of its curvature