Which of the following statements regarding the applications of hydrogen gas obtained from the chlor-alkali process is/are correct? 1. Hydrogen is used in the Haber process for the industrial synthesis of ammonia. 2. It is used in the hydrogenation of vegetable oils to produce solid fats. 3. It is used as a clean fuel in fuel cells, producing water as the only byproduct. Select the correct answer using the code given below:

Options:

• A: 1, 2 and 3
• B: 1 and 2 only
• C: 2 and 3 only
• D: 1 and 3 only

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