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Assertion (A): Line balancing matters more than the rating of any individual machine.

Reason (R): The slowest stage sets the throughput of the whole line.

Select the correct answer from the options below.

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

Answer: D

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

Since the slowest stage sets the throughput, a fine machine elsewhere in the line adds nothing - its extra capacity cannot be used. Balance therefore matters more than the rating of any individual stage, and the reason states precisely why.

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