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, ['2351', 'k', '2321']
[EX A]: 2321k2351

[EX Q]: 2, 4, ['179', 't', 'i', 'J']
[EX A]: Jit

[EX Q]: 7, 15, ['l', 'P', 'B', '2541', 'H', '9355', '8253', 'i', 'U', 'm', 'X', 'F', '6023', '97', 'z', 'n', 'c', '5751', '8427', 'V', '1851', '1629', '9485']
[EX A]:
z976023FXmUi8253