Sidestick_n_Rudder is correct, no right nor wrong.
Some airlines in OPT show only one V1, not a min and/or max. This one V1 is then defined by airline settings, which could be either, an intermediate or optimum...
If a range is given, it merely indicates the range between lowest and highest V1, both enable the aircraft to stop in the remaining distance and/or to fly off the tarmac and clear obstacles. Depending on conditions you may wish to use lower or higher V1. Obstacle clearance may be one additional factor, using an improved climb by using the higher V1...
aterpster also has a point that the lower V1 was some years ago preferred due incidents at the time requiring a rethink in using a higher V1 or not. Some EU operators have defined their OPT to always use minimum V1 in most airports, such that this enables the best margin in case of a stop and to prevent risk of an overrun (we are after all not all test pilot material that can stop in minimum distance and perform all required actions when being startled for real, but we are all trained to fly the tube with problems every few months in the simulator)