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.
14, 19, ['6095', 'z', 'Y', 'X', 'v', 'v', 'I', '7799', '8979', 'j', '5535', 'Z', 'I', 'B', '9987', '1225', '5203', 'w', 'n', '3793']