Question ATPL - Airline Transport Pilot license - Meteorology

141 - ATPL - How does relative humidity and the dewpoint in an unsaturated air mass change with varying temperature?

When temperature increases, the relative humidity increases, and the dewpoint decreases.

When temperature increases, the relative humidity decreases, and the dewpoint remains constant.

When temperature decreases, the relative humidity and the dewpoint remain constant.

When temperature decreases, the relative humidity decreases, and the dewpoint increases.