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]: 4, 17, ['897', 'R', 'L', '201', 'Z', 'o', 'A', '9367', 'E', 'G', '6653', 'i', 'V', 'F', '9433', 'G', '8073', '5739', '7009']
[EX A]: 3708G3349FVi3566GE7639AoZ102

[EX Q]: 3, 4, ['3097', 'E', '4255', '1665', '7179']
[EX A]: 56615524

[EX Q]: 1, 4, ['c', '6549', '239', 'B', 'c']
[EX A]:
B9329456c