"Where are you from" ?

"Where are you from" ?... is basically one of the most difficult questions I can answer. So I need your advice. If you're a multicultural individual with multiple backgrounds you know my struggles. How would answer to that question if you...

Are born in country A

But are raised in country B

Currently live in country C

But hold the citizenship of country B (and A) ?

In my case it's even worse. I feel the closest to the country B but it doesn't have its own language, so when I'm speaking the language they think I'm from a fifth country ,country D.

Sometimes I only say I'm from country A, to make it simpler, but not gonna lie (I have little cultural references of it (compared to the country B) and even tho I do speak the language, it is not my strongest one despite being my true native language).

I'm just tired to explain of this mess every time I meet new people.