Explanation:

- Statement 1: Atal Pension Yojana is indeed mainly focused on providing old age security to the unorganized workers who lack any social security coverage. Therefore, this statement is correct.

- Statement 2: Contributions to the Atal Pension Yojana (APY) are eligible for tax benefits under Section 80CCD, similar to those available under the National Pension System (NPS). Thus, this statement is also correct.

- Statement 3: The scheme is open to any individual between the ages of 18 and 40 who has a bank account. This eligibility criterion is accurate, making the statement correct.

- Options Review: All three statements are correct, aligning with the description provided here.

- Correct Answer: Option 5 - All of the above

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