That is not a combination of degrees. That is the way US system works. You go, do Bachelors for 3 or 4 years (120 credits) and then you go and do masters for 1.5 or 2 years (30 credits + thesis). That is what they expect to see and you have it. A combination would be if you had 3 year BA in Education and 3 year BA in Ccomputer Science and you are trying to use it as BA and Masters. Or you had Bachelors and a certificate course.