In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.

[EX Q]: 5, 6, ['9891', '9721', 'q', 'u', '8721', 'l', 'm', 'p']
[EX A]: l8721

[EX Q]: 1, 2, ['q', '3853', 'e', 'j']
[EX A]: 3853q

[EX Q]: 3, 5, ['p', '35', 'h', 'v', '7631', 'T', '3593', '9319', '8423', '7887', '8677', '2233', 'K', 'j', 'W', 'Z', 'F', '5777']
[EX A]:
7631vh