Discussion
Assertion (A): Colour matching functions are not the same as cone sensitivities.
Reason (R): They are a linear transformation of them determined by the primaries chosen.
Answer: D
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. Any set of matching functions is some fixed linear combination of the three cone sensitivities, with the coefficients set by the primaries used. This is why different primary sets give different-looking functions describing identical vision, and why the cone fundamentals can be recovered from the matching data by a transformation.
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