Which of the following forms the posterior wall of kidney?

Ans. B Quadrotus lumborumRef: BDC, 6th ed. vol. II pg. 313-314* The kidneys are reddish brown and measure approximately 10 cm in length, 5 cm in width, and 2.5 cm in thickness.* Superiorly: The kidneys are associated with the diaphragm, which separates them from the pleural cavities and the 12th pair of ribs.* Posterior surfaces of the kidney are related to the quadratus lumborum muscle. The subcostal nerve and vessels and the iliohypogastric and ilioinguinal nerves descend diagonally across the posterior surfaces of the kidneys.* Anterior surface The kidneys are associated with liver, duodenum, ascending colon and supra renal glands.* The right kidney is separated from the liver by the hepatorenal recess. The left kidney is related to the stomach, spleen, pancreas, jejunum, and descending colon