Array List Operations That Were Studied Included Adding/removing an Element

question 85

Multiple Choice

Array list operations that were studied included adding/removing an element at the end or in the middle, and retrieving the kth element. Which of the following statements about these array list operations is correct?

• A) The least expensive operation of an array list is to add an element at the end.
• B) The least expensive operation of an array list is to remove an element at the end.
• C) The least expensive operation of an array list is to add an element in the middle.
• D) The least expensive operation of an array list is to retrieve an arbitrary element.

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