Q: 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.
6, 14, ['o', 'U', 'n', 'z', '4275', '7069', 'B', 'G', 'z', '5199', '9687', 'K', '1903', '5013', '467', '5435', 'N', '7389', 'B', '8677', 'y', 'y', '1973', 'i', 'J']
A:
31053091K78699915zGB9607