Student Visa (F1, F2, M1, M2)

Hi.. I applied for F1 Visa in July 2016 and my visa got rejected because of 214(b) immigration law. I was not asked much questions and my visa was rejected. Now I am going to apply again so please help me find out my mistake in the first interview.

VO- Pass me your I20 and Passport.
ME- gave.
VO- So which uni your going to and which program.
ME- I am going to Kent State University and for Computer Science.
(VO was typing for a lot of time and was not asking questions. So I only told that..
I did my bachelors in Computer Engineering in 2013 and Currently I am working in Multinational Company as a Software Developer from past 2.5 years.)
VO- Which year you graduated?
ME- 2013, Sir.
VO- What is the post in your current company.
ME- said..
VO- What is your GRE and CGPA.
ME- GRE- 302 and CGPA- 7.88
VO-Backlogs
ME- No backlog.
VO- Who is going to sponsor
ME-My father is going to sponsor for my education.
VO- Can you tell me his annual income and show me your financial documents.
ME- His annual income is 8L per annum and We have 37L of savings and I am also taking 10L of loan. Showed all the financial documents.
VO-(Typed for 1 minute) I cant give u visa due to immigration law.

Can you tell me what was my mistake? I have a good profile and enough funds and I am also going to a National Ranking University.