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Which one of the following statements is incorrect about the excretory system of our body?

A) It is the renal artery which brings dirty blood into the kidneys

B) The nephron has cup-shaped bag at its upper end which is called glomerulus

C)  The lower end of Bowman's capsule is tube shaped and it is called tubule

D)  The Bowman's capsule contains a bundle of blood capillaries which filter the blood passing through them

E)  None of these