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]: 6, 15, ['7969', 'z', '7061', 'J', 'T', '7917', '7225', '7907', '8333', 'U', 'w', 'Y', '4729', '2461', 'X', 'k']
[EX A]: X24614729YwU8333790772257917

[EX Q]: 5, 5, ['M', 'N', 'S', '1125', 'B']
[EX A]: B

[EX Q]: 2, 2, ['9393', 'Y']
[EX A]:
Y