Your choice of course of study is a personal decision to make long before the day of registration. You must not allow anyone to make such a decision for you. In addition to that you must be precise on what exactly you want while making decisions, for example, if you want to take up an engineering course, you shouldn't just say engineering, you must specify what type of engineering faculty you want to belong to, for engineering has many faculties or types like mechanical, electrical, civil, mechatronics, material and metallurgical, etc. So you are to specify which one of them you want to study.