If one root of the equation $$ {Ax^2+Bx+C=0}$$ is two and a half times the others, then which of the following is True?

• A. $$ {7B^2=3CA}$$
• B. $$ {7B^2=4CA}$$
• C. $$ {7B^2=36CA}$$
• D. $$ {10B^2=49CA}$$