Wow... its basic comprehension.
Shall i talk you through the rather simple explanations on the back of the letter?
B= Your achievement (marks) in your qualifications (HSC subjects) is not sufficient (high enough) to enable an offer to be made to you in this competitive course (sorry your UAI is nowhere near high enough, there are many people with a higher UAI who we will pick beofore we even consider you). If you wish to upgrade your qualifications (re-do your HSC) for admission to this course or other institution s course in the future (go to TAFE or a different uni then try transfer, try again as mature age student..), we suggest you contact the relevant intitutions/s to discuss alternate pathways.
SORRY, theres no way were considering you for this course this year.
Q= your achievement in you qualifications is not sufficient to enable an offer to be made to you in this competitive course in this round of offers (your UAI wasn't high enough, but it wasn't too far off. If there are any vacancies you will most likely be given an offer next round.)
Make sense?