With respect to UNFCCC, consider the following statements.
1. UNFCCC Secretariat maintains the registry for Nationally Determined Contributions (NDC) established under the Paris Agreement.
2. ‘Conference of the Parties’ is held every five years to discuss and review climate actions.
3. The first Conference of the Parties or COP1 was held in Berlin, Germany in 2002.
Which of the above statements is/are correct?