1 . 2A = 3B 2B = 5C এবং 3C = 4D হলে A:B :C:D =কত?

• A. 4:8:15:20
• B. 15:10 4:3
• C. 4:6:15:20
• D. 4:8:10:20

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Answer: Option B

Explanation: