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, 23, ['6145', '8851', '3375', '9117', '9085', '6749', 'p', '3443', '8549', '8221', '8217', 's', '3739', '3579', 'P', 'A', 'n', '1197', 'k', 'j', '7371', 'O', 'n', '1275']