needs to be done in scheme

2- (30 pts) Implement list-tail and list-ref Your list-tail and list-ref functions should take two operands, where the first operand must be a list, and the second operand must be an int. (list-tail ) (list-ref ) It is an error if has fewer than elements list-tail should return the sublist of obtained by omitting the first elements list-ref should return the kth element of list. (This is the same as the car of (list- tail )). List-ref gives us an indexing operator like operatort] in c++ For example: > (list-tail '(a b c d e) 2) (c d e) > (list-ref'(a b cd e) 2)