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]: 3, 4, ['109', 'U', '6833', '6807', '4937', '7119', 'q', 'V', '5647', 'H', 'A', 'Y', 's', '3723']
[EX A]: 68076833

[EX Q]: 2, 2, ['2475', '621']
[EX A]: 621

[EX Q]: 1, 2, ['7253', 'p', 'N', '253', '2087', '1439', 'o', 'a', 'c', '4537']
[EX A]:
p7253