1)Collection<?> c = new ArrayList<
String>()
Which line inserted independtly at line 1 will allow to compile?
a)c.add(new Object());
b)c.add("Java");
c)c.add(null);
d)All 3 lines above inserted independtely will allow to compile
e)All 3 lines above inserted independtely will not allow to compile
Answer :c Why this code allows add method?