At what point is the Bar object, created on line 6, eligible for garbage collection?

(a) After line 8

(b) After line 9

(c) After line 4, when f() completes

(d) After line 10

class Test { String f() { String s = new String(); /* Line 3 */ return s; } public static void main (String args[]) { Test t = new Test (); /* Line 7 */ String s1t.f(); /* Line 8 */ s1= new String(); /* Line 9 */ System.out.println (sl); } }