Consider the following statements regarding the different grades of coal: 1. Anthracite has the highest carbon content and burns with a smokeless blue flame. 2. Lignite is often referred to as brown coal and has a higher moisture content than Bituminous coal. 3. Peat represents the first stage of coal formation and has the highest calorific value among all coal types. Which of the statements given above is/are correct?

Options:

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

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