Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A): Relative humidity decreases with increasing air temperature.
Reason (R): Absolute humidity increases with increasing evaporation.
Select the correct answer from the codes given below:

Assertion (A) is true. Relative humidity is defined as the ratio of the amount of water vapor present in the air to the maximum amount the air can hold at that temperature, expressed as a percentage. As air temperature rises, its capacity to hold water vapor increases (saturation vapor pressure increases). If the actual moisture content (absolute humidity) remains constant, the relative humidity decreases because the denominator (capacity) increases while the numerator stays the same.

Reason (R) is true. Absolute humidity is the mass of water vapor per unit volume of air. Evaporation adds water vapor to the air, thereby increasing absolute humidity.

However, R is not the correct explanation of A. The reason talks about a factor (evaporation) that increases absolute humidity, which would actually tend to increase relative humidity if temperature were constant. The decrease in relative humidity with temperature is due to the increase in saturation capacity, not due to evaporation. Therefore, both statements are true, but the reason does not explain the assertion.

Correct Answer: Both A and R are true, but R is not the correct explanation of A.