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.

[EX Q]: 11, 15, ['4565', 'Q', 'C', '8503', 'n', 'B', 'r', '8589', 'h', 'v', 'B', '5755', 'h', '3595', '9739', 'X', 'n', '5393']
[EX A]: 93795953h5575B

[EX Q]: 7, 9, ['w', 'L', '7649', 's', 'D', '45', 'L', 'O', 'H', '2781', '6883', 'h']
[EX A]: HOL

[EX Q]: 13, 16, ['k', '4079', 'F', 'l', '3129', 'P', 't', '7683', '8387', '6041', '4707', '755', 'E', 'X', '8751', '1167', '2575', '3847', 'C', '5921', '71', '2517', 'p']
[EX A]:
76111578XE