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, ['3745', 's']
[EX A]: s3745

[EX Q]: 1, 8, ['g', '6673', '761', 'B', '9393', '5409', 'A', '245', '4053']
[EX A]: 245A54099393B7616673g

[EX Q]: 4, 9, ['x', '7221', '1299', '893', '5155', '4109', '1805', 'X', '1129', '2427', '9599']
[EX A]:
1129X180541095155893