Which of the following soils vary from place to place on the basis of the parental rocks and climatic conditions?

1. Black soil
2. Laterite soil
3. Alluvial soil
4. Red soil.

Assertion (A): Transported soils do not have a well defined soil profile.

Reason (R): They constitute soils that are transported by various agents of erosion.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Alluvial soil is rich in which of the following minerals?

1. Iron
2. Nitrogen
3. Phosphorus
4. None of the above.

Assertion (A): The Northern Plains comprises riverine soil.

Reason (R): Riverine soil is a mixture of sand, clay and silt.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.