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]: 7, 7, ['z', '2235', 'B', 'E', 'u', 't', 'p', 'h']
[EX A]: p

[EX Q]: 3, 8, ['B', 'w', '4119', '8783', 'B', '3767', '6269', '8115']
[EX A]: 811562693767B87834119

[EX Q]: 2, 2, ['1797', '1431', 'Q', 'n', '2097', '4773']
[EX A]:
1431