Which of the following statements regarding recycling is/are correct? 1. Recycling is just the collection and separation of the waste materials. 2. Recycling is the collection and separation of the materials from the waste stream and their subsequent processing to produce a marketable product. 3. Recycling leads to reduction of waste disposal cost. Select the correct answer using codes given below

• A. Only 1
• B. 1 and 2
• C. 2 and 3
• D. 1 and 3