Which of the following statement are incorrect? (i) The morphological changes are indicative of certain element deficiencies and are called deficiency symptoms. (ii) The part of plants that show the deficiency symptoms depend on the mobility of the element in the plant. (iii) Deficiency symptoms appear first in the young tissues whenever the element are relatively mobile. (iv) The deficiency symptoms of Cl, Zn, N, O, are visible first in the senescent leaves.

• A. (iii) and (iv)                   
• B.        (i) and (iii)
• C.        (i) and (iv)         
• D.        (ii) and (iv)