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 anothers?

A no, Cody's has more blue.
B No, Arias has more blue
C Yes, they are equivalent
D No. codys has more red