Read the following statements

(A) In the stratosphere Cl atoms are released from CFC molecules by the action of U.V. rays

(B) U. V. - A rays damage DNA and induce mutations

(C) U. V. - B rays cause aging of skin and damage skin cells

(D) U. V. - C rays cause inflammation of the cornea called Snow blindness

Correct statements are

1
(A), (B) and (C)
2
(B) and (D)
3
(A) and (C)
4
(B), (C) and (D)

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