If\( a^\frac { 1 } { 2 } = b^2\) and \(a\) and \(b\) are both greater than 1, then what is the value of \(a^2\) in terms of \(b\) ?
(A)\(\frac { b^1 } { 4 } \) (B)\(\frac { b^1 } { 2 } \) (C)\(b\) (D)\(b^4\) (E)\(b^8\)
E