Which are criteria for Essentiality of Elements. Choose the correct sentences from given sentences.
(i) A plant must be unable to complete its life cylce in the absence of the mineral element.
(ii) The function of the element must not be replaceable by another mineral element.
(iii) All minerals which are absorbed by plants are not essential minerals.
(a) i and ii
(b) iii and i
(c) ii and iii
(d) only ii
