How do you define a custom iterator in Ruby?

A. A predefined set of instructions for performing a specific task B. A data structure that stores elements sequentially C. A method that iterates over elements in a collection D. A method that repeatedly calls a block of code

A. Enumerable.create B. Enumerator.create C. Enumerable.new D. Enumerator.new

A. To iterate over each element in a collection B. To filter elements in a collection C. To map elements to a new collection D. To sort elements in a collection

A. Sorts elements in a collection B. Removes duplicate elements from a collection C. Selects elements from a collection based on a condition D. Applies a block of code to each element and returns a new collection