Cody and Aria are painting a mural. They decide they want part of the mural to have a purple background. Aria uses 7 tbsp. of blue to 2 tbsp. of red to make her purple paint. Cody is planning to use more and uses 21 tbsp. of blue to 6 tbsp of red are their ratios of purple mixture equivalent to one another's?

1. No, Cody's has more blue
2. Yes, they are equivalent
3. No, Aria's has more blue
4. No, Cody's has more red