With reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct? 1. Bagasse can be used as biomass fuel for the generation of energy. 2. Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilizers. 3. Molasses can be used for the production of ethanol. Select the correct answer using the codes given below.

1. Bagasse, the fibrous residue left after crushing sugarcane, is rich in cellulose and lignin, making it a suitable biomass fuel. It is commonly used in sugar mills for cogeneration, producing both heat and electricity, thus contributing to energy generation. Statement 1 is correct. 2. Molasses is a thick syrup produced during sugar refining. It is primarily used as a feedstock for fermentation processes (like ethanol production) and as an additive in animal feed. Synthetic chemical fertilizers (like urea, DAP) are typically manufactured using processes involving ammonia, natural gas, phosphate rock, and potash, not molasses. Statement 2 is incorrect. 3. Molasses contains fermentable sugars, making it an important feedstock for the production of ethanol through fermentation by yeast. This ethanol can be used as a biofuel or for industrial purposes. Statement 3 is correct. 4. Therefore, statements 1 and 3 are correct.