The figure shows the human urinary system with structures labelled $A$ to $D$. Select the option which correctly identifies them and gives their characteristics and/or functions.

• A
  $C$ - Medulla: inner zone of the kidney and contains complete nephrons.
• B
  $D$ - Cortex: outer part of the kidney and does not contain any part of the nephrons.
• C
  $A$ - Adrenal gland: located at the anterior part of the kidney. It secretes catecholamines which stimulate glycogen breakdown.
• D
  $B$ - Pelvis: broad funnel-shaped space inner to the hilum, directly connected to the loops of Henle.