There is a road beside a river.Two friends started from a place A, moved to a temple situated at another place B and then returned to A again. One of them moves on a cycle at a speed of 12 km/hr, while the other sails on a boat at a speed of 10 km/hr. If the river flows at the speed of 4 km/hr, which of the two friends will return to place A first ?

• A. 8.4 km/hr
• B. 5.4 km /hr
• C. 7.2 km /hr
• D. 9.6 km /hr