The diagram illustrates some of the human body parts involved in excretion. What are the parts marked with labels?
- AW: bladder; X: ureter; Y: kidney; Z: urethra
- BW: kidney; X: ureter; Y: bladder; Z: urethra
- CW: bladder; X: urethra; Y: kidney; Z: ureter
- DW: kidney; X: urethra; Y: bladder; Z: ureter