Which of the following is incorrect pertaining to the ribs?

a)the first 7 are referred to as vertebrosternal ribs.
b)ribs 11 and 12 are typically "floating" (vertebral, free) ribs.
c)the tubercle of a typical rib attaches to the inferior articular facet of the corresponding vertebrae.
d)the head of a typical rib articulates with the bodies of two vertebrae.
e)the costal groove is associated with the intercostal vessels and nerv