With reference to the Pradhan Mantri Shram Yogi Maan-dhan (PM-SYM) Yojana, consider the following statements : 1. The entry age group for enrolment in the scheme is 21 to 40 years. 2. Age specific contribution shall be made by the beneficiary. 3. Each subscriber under the scheme shall receive a minimum pension of ₹ 3,000 per month after attaining the age of 60 years. 4. Family pension is applicable to the spouse and unmarried daughters. Which of the statements given above is/are correct ?