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]: 3, 14, ['3521', 'Z', 'v', '3603', 'l', 'Z', '4959', '9967', '6437', 'P', '2035', 'u', 'f', 'U', 'k', 'R', '4453']
[EX A]: Ufu2035P643799674959Zl3603v

[EX Q]: 4, 5, ['y', '2461', '7269', 's', 'V']
[EX A]: Vs

[EX Q]: 1, 2, ['C', 'F', 'R', '9499', 'q', '2649', '8217', '4123', '4737', 't', 'P', 'U', 'J', 'k', '7437']
[EX A]:
FC