What does the renal system consists of?

A、Two kidneys, two urethra, bladder, one ureter;
B、Two adrenal glands, two kidneys, one ureter, two urethrae, bladder;
C、Two adrenal glands, two kidneys, two ureters, two urethrae, bladder;
D、Two kidneys, one urethra, bladder, two ureters