Beyond commercial success, what was a key cultural impact of Kirk Franklin's Nu Nation Project (1997) on contemporary gospel music?

A It solidified traditional gospel quartet harmonies as the dominant sound. B It introduced a strictly liturgical approach to gospel performance. C It broadened the audience for gospel music by incorporating hip-hop and urban contemporary elements, sparking debate about genre boundaries and authenticity. D It primarily focused on replicating the success of earlier gospel artists without significant innovation.