Finish Question 20 Not yet answered suppose you have ql as integer queue with the following data (1,2,3,4,5,6), where l is at the front of the queue and ql is passed to a recursive method fl(), what the output of executing f1()? Timel Marked out of 200 Flag question void fl( Lqueue q1) { System.out.print (q1.dequeue()); if (!ql.isEmpty) fi(91) Select one: a. 1,2,3,4,5,6 O b. 6,5,4,3,2,1 c. method f10 is not executable d. 16,2.5,3,4