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Assertion (A): A map printed in a single ink can still show ordered data effectively.
Reason (R): Value can be varied continuously by screening the ink at different percentages.

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

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. A single ink screened at a series of percentages gives an ordered sequence of tints from pale to solid, which is exactly what ordered data needs. The map costs one plate rather than four, and a great many effective thematic maps have been printed this way.

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