What output occurs due to execution of the following code snippet:

char[] hocus = {'a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a'} ;
System.out.println(hocus[hocus.length]);

• r
• null
• 11
• a
• no output is produced
• abracadabra