The answer is 6.5 exactly.
1 is not true generally, while 3 and 4 are never true. 2 is the only generally true conjecture.
20% of the juice is cranberry
80% of the juice is apple
Our ratio would be 20:80
We can simplify it and it will become
1:4
So your answer would be B. 1:4
I hope this helps :)