Assertion: (A) Soil in the valley bottom is more fertile than those found on the ridge top.
Reason: (R) The presence of a large quantity of humus, mineral nutrients, moisture and suitable depth.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true, but R is Not the correct explanation of A.
C. A is true, but R is false.
D. A is false but R is true.
Answer: Option A

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