Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?

• 1.8 km, 0.15 km
• 2.2 km, 0.20 km
• 2.8 km, 0.25 km
• 3.3 km, 0.30 km