Point P is the midpoint of seg AB. Coordinates of P are (1,1)and A are (4,3). What are the coordinates of point B?

Point P is the midpoint of seg AB. Coordinates of P are (1,1)and A are (4,3). What are the coordinates of point B?
1). (6, 1)
2). (-6,-1)
3). (6, 1)
4). (6,1)

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