Statement A: Events of cell cycle do not occur in the G0 stage. Statement B: Cells do not show metabolic reactions in the Quiescent stage.

The stage at which the cell withdraws from cell cycle is usually G1 stage. Once withdrawn from cell cycle the events needed to progress through cell cycle are arrested  and such condition or stage of the cell is described as G0 stage. Though cell is in quiescent stage, the metabolic reactions to keep the cell alive are continued in the cell.