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Topological Winding number of a $\text{2.0 kb}$ covalently closed circular DNA was found to be $191$ with a writhing number of $-4$. Hence, its $\text{LINKING NUMBER}$ and the $\text{NUMBER OF BASE PAIR PER TURN}$ when the molecule is laid flat on the surface is _______ and _______, respectively.

  1. $\text{187, 10.69}$
  2. $\text{195, 10.25}$
  3. $\text{200, 10.00}$
  4. $\text{187, 10.50}$

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