Good morning everyone,
First of all, thank you for your fast answers.
This is material I have access to from a course, the question is likely to have been created by the teacher himself.
I think it's fine to make assumptions, as long as they are explained as the exercise is beeing solved.
This is probably the right answer, as the question was originally made as multiple choice.
I have found the possible answers in my notes:
{1,3,5,7,9,11,13,15,17,None} for the gain
{5.4,5.8,6.0,14.8,2.3,12.1,4.5,7.3,10.5,None} for the voltage at LC terminals