The Indian firm Godrej claims to be the first company in the world to have started making and selling air conditioners that do not use hydrofluorocarbons

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The Indian firm Godrej claims to be the first company in the world to have started making and selling air conditioners that do not use hydrofluorocarbons (HFCs). Which of the following statements with regard to HFCs is/are correct? I. HFCs have replaced CFCs and HCFCs as coolant for refrigerators. II. HFCs pose no harm to the ozone layer. III. HFCs are potent greenhouse gases. IV. HFCs are generated during the manufacturing of HCFCs. (a) II and IV only (b) I, II, and III only (c) All of the statements are correct (d) III and IV only

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