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]: 7, 10, ['4843', 'p', 'I', '8757', '2967', '7461', 'c', '2639', 'p', '8895']
[EX A]: 5988p9362c

[EX Q]: 2, 3, ['4601', '1107', 'R']
[EX A]: R7011

[EX Q]: 6, 11, ['9831', 'O', '9685', 't', '6521', 'd', 'J', 'F', 'E', 'i', 'X', 'r', 'M', '9011', '1487', '711', 'X', 'S', '5047', 'p', 'a', '373', '6641', 'U', '41', 'D', 'K']
[EX A]:
XiEFJd