Given figure is of longitudinal section of kidney. Identify the parts labelled as A to D and select the correct option.
A. `{:(A,B,C,D),("Cortex","Calyex","Renal column","Ureter"):}`
B. `{:(A,B,C,D),("Calyx","Cortex","Renal column","Ureter"):}`
C. `{:(A,B,C,D),("Medulla","Cortex","Renal column","Urethra"):}`
D. `{:(A,B,C,D),("Calyx","Cortex","Renal pelvis","Urethra"):}`