A sample of ${\mathrm{I}}_{51}^{131}$ as iodine ion was administered to a patient in a carrier consisting of $\text{0.10} \mathrm{mg}$ of stable iodine ion. After $4$ days $67.7\mathrm{\%}$ of initial radioactivity was detected in the thyroid gland of the patient. The percentage of stable iodine ion that had migrated to the thyroid gland, if ${\mathrm{t}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}$ for iodide ion is $8$ days is

• A

  $65.8\mathrm{\%}$
• Correct answer
  B

  $95.7\mathrm{\%}$
• C

  $85.8\mathrm{\%}$
• D

  $75.8\mathrm{\%}$

Hence, the correct answer is option: 'B'.