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Assertion (A): Weight and drag are converted to a common measure before being traded.

Reason (R): A kilogramme and a drag count cannot otherwise be compared.

Select the correct answer from the options below.

  • 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

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason is the necessity. A kilogramme and a drag count are different physical quantities and cannot be compared directly; what makes them comparable is that both ultimately show up as fuel burned over the mission. Converting each into that common measure is what allows a design trade to be settled by arithmetic rather than by assertion.

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