Which among the following statement$(s)$ is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
$(i)$ The formation of silver by decomposition of silver chloride
$(ii)$ Sublimation of silver chloride
$(iii)$ Decomposition of chlorine gas from silver chloride
$(iv)$ Oxidation of silver chloride

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