Answer- C. Negros have wide molar cusps and deep, shovel-shaped cusps in incisors The presence of shovel-shaped incision is a feature of Mongolians, and it is uncommon in Negros.A congenital lack of the third upper molar is most common in Mongolians but can occur in any race. Small nodules on the lingual surface of maxillary molars, called 'Carabelli's cusp', are most common in Caucasian races and rare in the other major racial groups. Negroid races tend to have large teeth and often have more cusps on their molars, even up to eight, with two lingual cusps on the mandibular first premolars as an additional common finding.