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.
1, 7, ['3725', '8797', '695', 'i', 'S', 'o', 'W', 'q', '7477', '7203', 'D', '3101', 'A', 'r', '95', '1873', '9919', '1921', 'U', '7701', 'Z', '2017']