Definition: 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.
Input: 5, 12, ['6893', 'M', '7593', 'e', 'C', '5209', '3785', 'Q', '9299', '1457', 'K', 'I', 'b', 'P', '7901']

IK14579299Q37855209C