TASK 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 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.
PROBLEM: 6, 9, ['7139', 'Z', '4407', '9791', 'F', '139', '4927', 's', '4721', 'Y']

SOLUTION: 1394927s4721

PROBLEM: 12, 12, ['d', 'E', 'x', '3077', 'H', 'G', '7227', '1323', '997', '8825', '9645', '6573']

SOLUTION: 6573

PROBLEM: 12, 12, ['3907', '5333', 'j', 'A', 'J', '1713', 's', 'H', '9131', 'I', '8863', 'C', '2329', '6799', 'm', '6443', '3265', '5607', 'M', 'U', '3275', '4945', '5493', '9271', '1827']

SOLUTION:
C