In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
--------
Question: 2, 2, ['8063', '8357']

Answer: 8357


Question: 1, 3, ['Y', 'k', 'P', '1517', 'z', '8727', 'U']

Answer: PkY


Question: 17, 18, ['251', 'D', '3195', '13', 'C', '8625', '1755', 'G', '2679', 'x', 'V', 'm', 't', '1719', '3209', '7591', '3761', '2967', '2613', 'L', 'e', 'x', '157']

Answer:
29673761