Which important process is performed on the woody tissue of plants to produce pulp in the paper industry?

  • A
    Removing water from wood by keeping it at approximately $50^oC$ for a long time.
  • B
    Giving chemical treatment to wood to break down cellulose.
  • C
    Removing oil from wood by treating it with suitable chemicals.
  • D
    Obtaining pure cellulose from wood by removing lignin.

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