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Assertion (A): A neutral grey has zero chroma at every level of lightness.
Reason (R): Both a star and b star are zero for a neutral sample.

  • A.Both A and R are true, and R is the correct explanation of A
  • B.Both A and R are true, but R is not the correct explanation of A
  • C.A is true but R is false
  • D.A is false but R is true

Answer: A

Both are true and the reason gives the arithmetic, and hue angle is undefined there. The neutral axis runs vertically through the centre of the space. Hue angle is undefined on the axis itself. Both chromatic coordinates vanish there.

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