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.
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Question: 5, 5, ['m', '1577', '7895', 'l', 'K', '2981', '8677']

Answer: K


Question: 13, 14, ['5913', '6823', '5945', 'a', '8191', 's', '5405', 'l', '2515', '3901', 'R', '1575', 'e', 'P', '9231', '39', '6651', 'N']

Answer: Pe


Question: 10, 14, ['1521', '7137', 'd', '6297', '2677', 'C', '4685', 'o', 'u', '8443', 'v', 'n', 'r', 'q']

Answer:
qrnv3448