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, 2, ['o', 'b', '7511', 'Z']
[EX A]: bo

[EX Q]: 3, 4, ['1019', '7135', 'J', 'j', '6487', 'O', 'w', 'x']
[EX A]: jJ

[EX Q]: 2, 3, ['O', 'Y', 'f', 'q', '9541', 'B', '8513']
[EX A]:
fY