How can you access the select query of a collection?

How can you access the select query of a collection?
A . You can only access the select query after the collection has been loaded by calling the public method query ()
B . It is stored in a protected variable $query and can only be accessed from the inside of a collection class
C . You can get it by using public method getSelect() which returns an instance of MagentoFrameworkDBSelect
D . The select query is not available in the collection class, it will be generated by the MySQL adapter right before executing a query

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Answer: C