Pick up the correct statement from the following :

• When rainfall rate exceeds the infiltration capacity, the water enters the soil at full capacity rate
• When rainfall rate is less than the infiltration capacity, the infiltration rate is approximately equal to the rainfall rate
• The actual infiltration rate at any time may be equal to or less than the infiltration capacity
• The actual prevailing rate of infiltration of water in the soil at any time, is known as infiltration rate
• All the above.