With reference to the provisions made under the National Food Security Act, 2013, consider the following statements:

1. The families coming under the category of 'below poverty line (BPL)' only are eligible to receive subsidies food grains.

2. The eldest woman in a household, of age 18 years or above, shall be the head of the household for the purpose of issuance of a ration card.

3. Pregnant women and lactating mothers are entitled to a 'take-home ration' of 1600 calories per day during pregnancy and for six months thereafter.

Which of the statements given above is/are correct?