Consider the following statements relating to salt production in India :India is the second-largest producer of salt in the world next only to China.Salt mining is carried out in Himachal Pradesh.Gujarat is the leading producer of salt in India.Groundwater is an important source of salt in Rajasthan.Which of the statements given above are correct?

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