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.
5, 16, ['r', '6787', 'Q', '6411', '987', '8515', 'Q', 'L', '2859', '3205', 'K', 'N', '3989', 'j', '6289', 'G', 'c', '2433', '4197']