Superiorly, a ___ ___ is defined by drawing an imaginary line across the inferior borders of the ___ ___ ___. This plane is called the ___ ___.
a) Transthoracic plane; rib cage; thoracic plane
b) Transverse plane; rib cage; subcostal plane
c) Sagittal plane; sternum; costal plane
d) Coronal plane; rib cage; subcostal plane