I am an Indian passport holder working in Germany as a Researcher since March 2018. I have been living in Germany for 3 years and I graduated this year in January. I hold an EU Blue card at the moment. My visa to the US was rejected last year under section 214 (b) explained here UK tourist visa after US tourist visa refusal under 214 (b). I waited for 10 months for my circumstances to change(from student to working professional) before going for a new visa application. I would like to apply for a tourist visa to the UK and in the visa application, there is one question about previous visa refusal.
How should I answer this question? Shall I just mention "section 214 (b): ties with the home country are not strong" or should I explain in detail about the rejection and attach a cover letter?
I was really not convinced by the previous rejection as I was a student and I had every reason to come back to Germany to finish my studies. Since the letter that VO gave me was rather generic, I am not sure how to explain it in my new application.
Any help would be appreciated.
Update: So I applied for the UK visa and received it within 15 days with no problems at all. For the previous visa refusal question, I described the case very briefly giving details about why I wanted to travel and how my circumstances changed.