The diagram shows a model of a nephron and its associated blood vessels.

This model has been criticised for being a poor representation of a nephron. Which of the following statements explain(s) this?
(i) The rubber tubing at B is not split up into numerous branches like the capillary network of the glomerulus.
(ii) The rubber tubing at B should be continuous and not contain small pores.
(iii) The stem of the thistle funnel (E ) is not coiled to represent the convoluted tubules of the nephron.

Options

A. (i) only
B. (i) and (iii) only
C. (ii) and (iii) only
D. (i), (ii) and (iii)

Answer

B