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]: 5, 7, ['2695', 'K', 'B', 'h', 'V', '6435', 'Q', '2881', '7385', '8941']
[EX A]: Q5346V

[EX Q]: 8, 8, ['n', '9001', 't', 'e', 'W', '2287', 'f', '2735', 'z', '3065', 'J', '5609', 'e', 's', 'F']
[EX A]: 5372

[EX Q]: 17, 18, ['Q', '2949', 'k', 'o', 'Y', '6461', 'U', '5273', '2789', 'P', 'H', '669', '4233', 'r', 'd', 'A', 'C', '8835', '121', '6291', 'A']
[EX A]:
5388C