First of all, I would say that NCC C certificate is the best one and not the NCC A certificate. Moreover the minimum criterion of eligibility needed to be met for admission to the course is a 10+2 or equivalent qualification from a recognized institute/ university with a minimum aggregate score of 50.  But what really matters is the merit list. So according to your score and past trend you may try for south campus colleges like Sri Venkateswara College, Kamala Nehru College, Shaheed Bhagat Singh College, etc.