(Solved): Solve the system of equations using the substitution method. \( r-4 s=0 \) \( 8 r-7 s=25 \) Sele ...

Solve the system of equations using the substitution method. \( r-4 s=0 \) \( 8 r-7 s=25 \) Select the correct choice below and fill in any answer boxes present in your choice. B. There are infinitely many solutions. C. There is no solution. A. The solution of the system is (Type an ordered pair.)