\( 3 x+b y-1=0 \) রেখাটি \( x^{2}+y^{2}-8 x-2 y+4=0 \) বৃত্তকে স্পর্শ করে। \( b \) এর মান কত?

A \( 2,-\frac{1}{6} \)

B \( 12,-1 \)

C \( 2,-6 \)

D \( \frac{1}{2},-\frac{1}{6} \)

Solution

Correct Answer: Option A

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