Question: suppose you have ql as integer queue with the following data (1,2,3,4,5,6), where 1 is at the front of the queue and ql is passed

suppose you have ql as integer queue with the following data (1,2,3,4,5,6), where 1 is at the front of the queue and ql is passed to a recursive method fl (), what the output of executing fl()? void fl( Lqueue q1) { System.out.print (ql.dequeue()); if (!ql.isEmpty) fil qi); } Select one: O a. 1,2,3,4,5,6 O b. 6,5,4,3,2,1 O c. method fo is not executable O d. 1,6,2,5,3,4
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