Excessive exposure of humans to $UV$-rays results in:
$(i)$ Damage to immune system
$(ii)$ Damage to lungs
$(iii)$ Skin cancer
$(iv)$ Peptic ulcers

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

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