The marks obtained by Vijay and Amith are in the ratio 4:5 and those obtained by Amith and Abhishek in the ratio of 3:4. The marks obtained by Vijay and Abhishek are in the ratio of? Select the correct option: A) 3 : 4 B) 3 : 5 C) 6 : 5 D) 3 : 6 E) 3 : 8

Rationale: "4 : 5 3 : 4 - - - - - - - 12 : 15 : 20 12 : 20 - - - - - - > 6 : 10 3 : 5 answer : b"
Answer: B