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: 6, 6, ['P', '3241', 'f', 'j', '8495', 'U', 'P', '2103', '5891', 'Z', '3071', 'T', 'g', '6281', '8539', '7381', '6831', '9403', '3591', 'B']

U