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.

Q: 5, 5, ['6131', '6209', 'H', 'g', '4529', '491', '2143', '6281']

A: 9254
****
Q: 3, 4, ['6865', 'A', 's', 'o', '1989', 'i', '613', 'S', 's']

A: os
****
Q: 2, 2, ['39', 'W']

A:
W
****