Two points, \(A\) and \(B\), are in a pipe carrying a flowing ideal fluid. Point \(B\) is \(2.0\,\text{m}\) higher than point \(A\), and the fluid speed at \(B\) is twice the speed at \(A\). If the pressure at \(A\) is \(P_A\), which of the following expressions correctly represents the pressure at \(B\) \((P_B)\)?