Which of the following statements regarding diaphragn are true? (a) The crura join to form the lateral arcuate ligament. (b) The fascia overlying the psoas muscle is thickened and gives origin to the diaphragm. (c) The IVC passes through the posterior diaphragmatic openings. (d) The aoa enters the thorax anterior to the crura. (e) The eosphagus passes through the muscular pa of the diaphragm in the region of the right crus.