Two pair of bullocks are ploughing a field by victory ploughs at a speed of 2 km/hr. If the average width of each furrow is 25 cm. How much time will be required to plough one hectare land? Where after each two hours working, 20 minutes rest is required to provide ?

• A. 10 hours
• B. 11 hours 40 minutes
• C. 8 hours
• D. 8 hours 20 minutes