Easy question as I have followed a session about this topic ( with a marvellous speaker , Frédéric Pichaud ) at Issy-les-Moulineaux. All the answers were given and fully explained , it is why I had no problem with this question.
When I read the 1st time this question, I have hesitated 2012 or 2014 and I remembered what Frédéric said :
clustered ==> 2014
nonclustered ==> 2012 and 2014
After this little hesitation , all the choices were easy.