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.
8, 15, ['6711', '6201', 'B', '7843', 'r', '6381', 'i', 'e', '9197', 'G', 'u', 'V', '5567', '3245', '957', 'a', '8709', 'U', 'd', '5857', '6193', '4001', '3193', 't', '4115', '7437', 'K', 'e', 'W']