CASPOL can be applied in which of the following fields: 1. Launch Vehicle 2. Railways and Automobiles 3. Cooking Gas 4. Cottage roofs Select the correct answer using the code given below.

• A. 1 and 2 only
• B. 1 only
• C. 1, 2 and 3 only
• D. 1, 2 and 4 only