. (Challenging) Write a function DuplicateSE(int first, int last) for the AUList that duplicates only those elements of the list beginning with first and ending with last (both inclusive) The member function must have the signature AUList DuplicateSE(int first, int last). Ex: If a AUList myAL has elements (5, 1, 3, 9, 7, 11) then myAL.DuplicateSE(1,4) should return an AUList with elements (1, 3, 9, 7) -- in that order. Note that you do not need to write a version of this for the LLUList structure. Note that calling DuplicateSE should not modify the structure of the original AUList (myAL in the above example).