An ideal battery with potential difference \(\Delta V\) is connected in a circuit with three identical lightbulbs labeled \(X\), \(Y\), and \(Z\), each of resistance \(R\), and a switch \(S\), as shown. Bulb \(X\) is located in the main branch, while bulbs \(Y\) and \(Z\) are in parallel branches, with switch \(S\) in series with bulb \(Z\). Switch \(S\) is initially closed and is then opened. Which of the following correctly ranks the brightness of the three bulbs after switch \(S\) is opened?