Can a C corporation be considered a closely held corporation if family members control more than 50%?

I am trying to determine if a C Corp that has approx 20 shareholders, with one shareholder owning more than 50%, can be considered a closely held corporation?Can a C corporation be considered a closely held corporation if family members control more than 50%?
absolutelyCan a C corporation be considered a closely held corporation if family members control more than 50%?
yes