question_answer

Consider the following statements. Chlorofluorocarbons, known  as ozone-depleting substances, are used

1. in the production of plastic foams.

2. in the production of tubeless tyres.

3. in cleaning certain electronic components.

4. as pressurising agents in aerosol cans.

Which of the statement(s) given above is/are correct?

A)  1, 2 and 3                    

B)  Only 4  

C)  1, 3 and 4                    

D)  All of these