What is the output of the following? (Choose three.) 

A. When inserting ArrayList into the blank, the code prints 1 false.

B. When inserting ArrayList into the blank, the code does not compile.

C. When inserting HashMap into the blank, the code prints 1 false.

D. When inserting HashMap into the blank, the code does not compile.

E. When inserting HashSet into the blank, the code prints 1 false.

F. When inserting HashSet into the blank, the code does not compile.

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20: var chars = new 21: chars.add('a'); (); 22: chars.add(Character.valueOf('b')); 23: chars.set(1, 'c'); 24: chars.remove(0); 25: System.out.print(chars.size() + 11 "+ chars.contains ('b'));