National Instruments Software Engineering Intern I interview questions

The interview was mainly composed of behavioral questions. Mainly what they are looking for is your thought process and how you work with others. At the end they gave me a coding question which was to write code in whichever language you prefer to find the height of a tree.

I applied online and through my university's career site. I got an interview around 2 weeks later to be scheduled the end of that week. I got an email after around 2 weeks saying I was rejected. Technical questions were easy, so I'm thinking I didn't correctly answer the behavioral questions.