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: 4, 5, ['8703', 'A', '9457', 'S', '7989', '9543', '8599', '825', '5831', '2147', 'C', '9235', '2227', '2913', 'u', 'D', '1161', 'R', 'F', '3305', 'w', '2159', '9245', '2825', 'I', '3639', 'a', 'T']

7989S