If I appear in ALL MAIN SUBJECTS in the CBSE IMPROVEMENT EXAM -2013, and in any one subject (or two subjects), I secure marks less than that I secured in previous year's main exam ,THEN WHICH ONE OF MY MARKS WILL BE CONSIDERED IN JEE MAIN FOR ADMISSIONS TO VARIOUS ENGINEERING INSTITUTES --- the IMPROVED MARKS in THE SUBJECTS or all new marks including the lesser ones.????

PLZ SOMEONE GIVE DETAILS. ITS VERY URGENT!!!!!!