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: 3, 11, ['5285', '2903', 'Y', '8439', 'd', 'g', 'H', 'U', 'q', 'm', 'N', 'x', '6001', 'C', '8987', '5731', '7617', 'W', '7347']

NmqUHgd8439Y