> 2. 'orange' has been turned from the last element of the list to a non-last element of the list Then why not consider it four changes? 3. 'banana' has been

> 2. 'orange' has been turned from the last element of the list to a non-last element of the list Then why not consider it four changes? 3. 'banana' has been turned from the last-but-one element of the list to the last-but-two element of the list 4. 'apple' has been turned from the last-but-two element of the list to the last-but-three element of the list