My previous marks in the subject is above 60% but improvement one I got RT and will cbse prefer my best marks or not ..

And after passing in 5th subject out of 6 ,I know I will be declared pass but can I give compartment in only that particular subject or have to give all

Hii! I opted 6 subjects in class 12 cbse! I Passed 5 subjects and got rt in 6th subject (math). So, under improvement category I wrote math xam, But I again failed in math,in the sense I got repeat theory (rt). My result was xxxxx! My doubt is can I reappear in improvement category to clear math? Cuz some says only one chance is given for improvement exam! Plzz reply yaar^!