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.

[EX Q]: 1, 3, ['Y', 'k', 'P', '1517', 'z', '8727', 'U']
[EX A]: PkY

[EX Q]: 8, 24, ['d', '2371', '7971', 'C', 'P', 'M', 'm', 'L', '2563', '1489', '2649', 'Y', 'K', '6075', '9543', 'q', '3687', 'b', 'U', '4779', '8109', 'W', 'K', '7385']
[EX A]: 7385KW81094779Ub3687q95436075KY264914892563L

[EX Q]: 9, 12, ['7871', 'i', '689', 'j', '129', 'p', '5773', 'k', 'u', 'l', 'U', 'n', '5543', 'O']
[EX A]:
nUlu