Step 1: Understanding the Concept:
Orographic precipitation is a type of precipitation caused by mountains.
Infiltration is a separate process in the hydrological cycle.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand both orographic precipitation and infiltration.
Step 3: Detailed Explanation:
Orographic precipitation occurs when moist air is forced to rise by mountain barriers.
As the air rises, it cools and condenses, causing precipitation.
This is correct.
Infiltration is the flow of water into the ground through the soil surface.
It is measured using a double ring infiltrometer.
This is also correct.
However, infiltration is not related to orographic precipitation.
They are two different processes.
Thus, both A and R are correct, but R is not the correct explanation of A.
Step 4: Final Answer:
Both A and R are correct, but R is NOT the correct explanation of A.
Hence, the correct option is (B).