Happy Nails interview questions

The interview was nit bas at all there were three individuals that asked me questions one being the owner of the company. The questions were very basic but ine that stood out was "Majority of our workers are vietnamese how would you handle the langusge barrier"? Being that I speak english that would have been the first thing they might have noticed but I answered the question to the best of my kkowledge and I left. They did call me to say that I was not chosen which was fine but I think for anyone who is going to apply should have knowledge of the vietnamese language.