Assertion (A): Physiological density is preferable to arithmetic density as an index of population density.Reason (R) : Physiological density is based on arableland while arithmetic density is based on total area.

• A. Both A and R are individually true and R is the correct explanation of A
• B. Both A and R are individually 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