Yaar you have ample time before you appear in the exams..make a list of the subjects you are interested in and then go through some of their course and also see the past papers..for me interest and aptitude for the subject matters the most..Journalism is a very easy subject..u must opt for it..other than that IR also is good and pretty interesting too..but as I said it all depends on the candidate's taste and interest..no subject is good or bad..if you really have the passion for a subject, you will automatically score good