Two buses start from a house at an interval of 5 minutes and move with a speed of 10 km/hr in the same direction. With how much speed (km/hr.) should a woman coming from the opposite direction towards the house travel, to meet the buses at an interval of 3 minutes?

• A. 6.5
• B. 6
• C. \(6 \dfrac{1}{3}\)
• D. \(6 \dfrac{2}{3}\)