In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
2, 7, ['7683', '9483', '4599', '1801', '1991', '897', '8997', '6125', 'A', 'U', 'd', '653', 'v', '7029', '8735', 'H', '257', 'l', '3759', 'x']