The Dani,an Isolated Tribe Living in New Guinea,have Only Two

The Dani,an isolated tribe living in New Guinea,have only two words for colours,roughly corresponding to "light" and "dark." According to the linguistic relativity hypothesis,they should:

A) have developed more terms for colours.
B) have more terms for sounds as a perceptual compensatory mechanism.
C) make light and dark discriminations better than do those in other cultures.
D) exhibit impairments in recognizing shades of colour.