If the ratio of \(a\) to \(b\) is 7:8 and the ratio of \(c\) to \(d\) is 7:5, what is the value of \(\frac { ad } { bc } \)?
(A)\(\frac { 5 } { 8 } \) (B)\(\frac { 49 } { 40 } \) (C)\(\frac { 8 } { 5 } \) (D)\(\frac { 40 } { 49 } \) (E)\(\frac { 7 } { 8 } \)
A