A cube of side 1 unit is placed in such a way that the origin coincides with one of its top vertices and the three axes along three of its edges. What are the co-ordinates of the vertex which is diagonally opposite to the vertex whose co-ordinates are (1, 0, 1)?
- (0, 0, 0)
- (0, -1, 0)
- (0, 1, 0)
- (1, 1, 1)