Transpiration has been described as a 'necessary evil' because it is inevitable, but potentially harmful. Which of the following statements describe this?
(i) It causes absorption of mineral salts.
(ii) It regulates plant temperature.
(iii) It causes wilting and injury in plants.
(iv) It causes ascent of sap.
A (i) and (iv) only
B (i), (ii) and (iii) only
C (i), (ii) and (iv) only
D (i), (ii), (iii) and (iv)