Three bike riders began a bike ride from their school. All three bike riders rode either north, south, or a combination of north and south. The table below shows each bike rider's position relative to their school after an hour. A positive number represents a position, in miles, to the north of their school. A negative number represents a position, in miles, to the south of their school. Bike Rider Position Relative to Their School after an Hour Bike Rider 1 $0$ Bike Rider 2 $-5.3$ Bike Rider 3 $2.8$Which statements must be true? Select all that apply.