Using the phong reflectance model, the strength of the specular highlight is determined by the angle between

1. Athe view vector and the normal vector
2. Bthe light vector and the normal vector
3. Cthe light vector and the reflected vector
4. Dthe reflected vector and the view vector

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Correct answer: D. the reflected vector and the view vector

Explanation

The specular term is (R · V)ⁿ: the angle between the reflected vector and the view vector.