Concerning air-conditioning system dry-expansion cooling coils, what statement is true?

Correct Answer: Option A — Dry expansion cooling coils are usually the finned-coil type and horizontally installed.

Dry-expansion cooling coils use finned-coil construction to increase the surface area for heat exchange between the refrigerant and the air stream. These are typically installed horizontally to ensure proper refrigerant distribution and oil return, which are critical for maintaining the efficiency of the direct expansion refrigeration cycle in marine environments.