Discussion
Assertion (A): Multi-primary displays can achieve a wider gamut than three primaries allow.
Reason (R): A polygon with more vertices encloses more of the chromaticity diagram.
Answer: B
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. Three primaries define a triangle in the chromaticity diagram; adding a fourth or fifth primary outside that triangle turns it into a polygon enclosing more area. Since the spectrum locus is convex and no triangle can cover it, more vertices is the only way to approach it.
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