Definition: 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.
Input: 5, 11, ['4291', 'n', 'O', 'z', '4791', 'a', '3027', 'm', 'C', '2635', '7303', '1987', '8319', '3457', '9729', 's', 'u']

73032635Cm3027a4791