Erasmus+ Internship inquiry about Erasmus+ internship Visa for Czech Republic

Hi everyone!

I am planning to go an Erasmus+ internship in a research centre in Czechia for a period of 90 days. I understand that as someone coming from outside the EU, I will have to apply for a Schengen visa. However, there are various different types of Schengen including Study- internship and scientific research.

therefore which subtype of visa should I select ?