Consider the following statements about petroleum and select the correct answer using the code given below: 1. Petroleum is in greatest demand in modem industry. 2. It supplies about half of the world's energy requirements. 3. It provides fuel for heat and lighting and raw material for a large number of industries. 4. It occurs in great abundance and can be obtained easily. Code:

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