Which among the following statements is are true ? Exposure of silver chloride to sunlight for a long duration turns grey due to
(i) The formation of silver by decompositionof silver chloride
(ii) Sublimation of silver chloride
(iii) decomposition of chlorine gas from silver chloride
(iv) oxidation of silver chloride

Options

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