1 . $2x+3y+10=0$ ও $2x+3y+8=0$ রেখা দুইটির মধ্যবর্তী দূরত্ব কত?

• A. $\frac{7}{\sqrt{12}}$
• B. $\frac{2}{\sqrt{6}}$
• C. $\frac{2}{\sqrt{13}}$
• D. $\frac{7}{\sqrt{15}}$

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Answer: Option C

Explanation: