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, ['R', '8853', '1197', 'z', 'n', 'o', 'x', '3467', '3415', '5109', 'C', '6529', 'F', '529', '9005', '8595', 'a', '6197', 'X', '1343', 'o', 'G']
[EX A]: z1197

[EX Q]: 5, 6, ['9891', '9721', 'q', 'u', '8721', 'l', 'm', 'p']
[EX A]: l8721

[EX Q]: 1, 7, ['4687', '7249', '5629', '4815', '3015', 'G', 'F', 'o', 'O']
[EX A]:
FG30154815562972494687