单选题public class X { public object m （） { object o = new float （3.14F）； object oa = new object [1]； oa[0]= o； o = null； return oa[0]； } } When is the float object created in line 3， eligible for garbage collection？（）A Just after line 5B Just after line 6C Just after line 7 （that is， as the method returns）D Never in this method.
单选题
public class X { public object m （） { object o = new float （3.14F）； object oa = new object [1]； oa[0]= o； o = null； return oa[0]； } } When is the float object created in line 3， eligible for garbage collection？（）
A
Just after line 5
B
Just after line 6
C
Just after line 7 （that is， as the method returns）
D
Never in this method.
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