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, ['6025', 'W', '4529', 'D', '9719', '6937', '1967', 'U']
[EX A]: D4529

[EX Q]: 1, 1, ['9543', 'z']
[EX A]: 9543

[EX Q]: 3, 4, ['9279', 'H', 'j', '341', 'p', '9949']
[EX A]:
341j