The answer to your question is B because it stores urine from your kidneys .
A systemic lupus erythematosus (SLE) is a condition whereby the immune system attacks the body, confusing it with something foreign. When this patient complains that his hands become pale, blue and painful when exposed to cold, the disease that the nurse should cite in as an explanation for these signs and symptoms is Raynaud's disease. This disease causes areas of your body to numb whenever someone has stress on in the events of being exposed to extreme cold temperatures. The blood vessels narrows and limiting the blood circulation to the affected areas. This effect is called vasospam.
