In this Dynamic N-Tree Gate, the supply voltage equals 0.9 V. If A, B = 0 during Precharge phase and both transition to '1' during Evaluate phase of the Clock, determine the voltages of X, Y and Z. What is the maximum leakage that can be tolerated assuming a cycle time of 1 ns if A, B = 0 during the evaluate phase and the logic threshold of the inverter driven by this gate is 0.7 V?