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]: 2, 2, ['2475', '621']
[EX A]: 621

[EX Q]: 6, 7, ['D', '1819', '9379', 'B', '6071', 'Q', 'T', 'V', '4239', '3199', 'h', 'O', '5369', '3553', 'd', 'l', 'J', '6959', '8007', 'j']
[EX A]: TQ

[EX Q]: 9, 20, ['4797', 'e', 'Y', '175', '8157', 'B', 'X', '3799', 'x', '4853', 'j', 'T', '3859', 'f', 'C', '2325', 'k', 'x', '6361', '4369', 'w', 'J', '6077', 'n', 'w', '7009', '1355']
[EX A]:
43696361xk2325Cf3859Tj4853x