Does the provision of and contribution to benchmarks that are used outside the European Union only fall within the scope of the BMR?

Article 2(2)(d) BMR exempts the application of the BMR for “the provision of a single reference price for any financial instrument listed in Section C of Annex I to Directive 2014/65/EU”. What does “single reference price” mean?

Is the euro short-term rate (€STR) based on contributions of input data as defined in Article 3(1)(8)?

Is the euro short-term rate (€STR) based on contributions of input data as
defined in Article 3(1)(8)?

Does the BMR apply to EU and third country central banks and the benchmarks they provide?