With reference to the funds under Members of Parliament Local Area Development Scheme (MPLADS), which of the following statements are correct ? 1. MPLADS funds must be used to create durable assets like physical infrastructure for health, education, etc. 2. A specified portion of each MP's fund must benefit SC/ST populations. 3. MPLADS funds are sanctioned on yearly basis and the unused funds cannot be carried forward to the next year. 4. The district authority must inspect at least 10% of all works under implementation every year. Select the correct answer using the code given below :