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 concatenate all elements of A from the ith element to the jth element, and print 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.
Q: 16, 20, ['L', 'C', 'G', 'c', '2205', 'Q', '2249', 'g', 'T', 't', '6929', 'H', '1471', '6667', '87', 'D', '7723', '325', 't', 'u']
A: 
D7723325tu