Explanation:

Both codes 1&2 are correct.

• The Goods and Services Tax (GST) is a tax on goods and services. 
• It is an indirect tax that has mostly superseded several other indirect taxes in India, such as excise duty, VAT, and services tax.
• At present, the following items are kept outside the purview of GST in India: 
• Alcohol for human consumption: In India, alcohol for human consumption is currently exempt from the GST regime. The taxes on alcohol for human use, on the other hand, will remain in place as they were before the establishment of the GST. 
• Petroleum products: Petroleum products such as crude oil, motor spirit (petrol), high-speed diesel, natural gas, and aviation turbine fuel, among others, are exempt from GST in India. However, the taxes on these items will be levied in accordance with the framework in place before the implementation of GST.  
• Medicines: GST levies on pharmaceutical products can range between different tax rates, i.e. Nil, 5%, 12% and 18%.  

Hence option 1st is correct.