Please choose the correct ending to complete the given sentence: Cleaning windows: A woman stands in front of a window pane. The woman then points to several parts of the window. the woman

Ending1: then opens the window. Ending2: lightly brushes the part of the glass where she brushed. Ending3: then unrolls the window to remove any dust. Ending4: sharpens a knife and mends a piece of glass on the frame.

Answer format: ending1/ending2/ending3/ending4