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.
3, 15, ['r', 'R', 'K', '15', '8711', '8489', 'r', '8939', 'i', 'K', '1877', 'Q', 'V', 'F', 'H', '4933', 'I', '3569', 'd', '8269', 'k', '6559', 'E', '9113', 'l', 'y', '7579', 'M', '6631']