Recently I have been reading Q&A for the 70-483 Microsoft certification exam. Most of the questions are very simple, but some of them were actually hard to answer correctly. Anyway, one of the questions forced me to make a small research regarding how C# compiler concatenates strings. At first, I thought that the question is very easy and there is nothing special about that, but then I realized that I am not 100% confident with my answers, I will show you why.

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