Discussion
Assertion (A): A batch dyed too dark cannot usually be corrected by addition.
Reason (R): Colourant can be added to a dyeing but not taken out of it.
Answer: D
Both are true and the reason gives the asymmetry, and stripping is damaging and expensive. Aiming slightly light on the first dyeing is standard practice. Stripping is damaging and expensive. Aiming light on the first dyeing is standard.
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