Which of the following statements are correct? 1 The signature of an indexer consists of the number and types of its formal parameters. 2 Indexers are similar to properties except that their accessors take parameters. 3 Accessors of interface ind

Which of the following statements are correct?

1 The signature of an indexer consists of the number and types of its formal parameters.

2 Indexers are similar to properties except that their accessors take parameters.

3 Accessors of interface indexers use modifiers.

4 The type of an indexer and the type of its parameters must be at least as accessible as the indexer itself.

5 An interface accessor contains a body.