L1, L2 are two lists of integers, X is an integer, to insert the last item in L1 at the end of L2 we write Select one: O a. L1.retrieve(L1.size().X); L2.insert(L2.size0,X); O b....

Extracted text: L1, L2 are two lists of integers, X is an integer, to insert the last item in L1 at the end of L2 we write Select one: O a. L1.retrieve(L1.size().X); L2.insert(L2.size0,X); O b. L1.retrieve(L1.size0-1,X); L2.insert(L1.size0,X); Oc. L1.retrieve(L1.size0-1,X); L2.insert(L2.size()-1,X); O d. L1.retrieve(L1.size0-1,X); L2.insert(L2.size(,X);