If you have a three year degree from an Australian, Indian, New Zealand university or similar three year degree programs, you will not be eligible for admission to most MBA programs.
You will require a professional four-year degree like engineering or other such courses. In that case, a one-year university affiliated program can make up for the fourth year required. The key point being that you do the program from a recognized university programme.
It is always advisable that after you pursue your Bachelors from the above mentioned categories, you should complete your Masters. For example. M.Sc, M.A, M.Com students will be the ideal qualification to apply to business schools in USA.
Eligibility - 16 years of undergraduate education ( i.e 4 years of education after High School / Junior College).