Final answer:
Option A: Storing films in direct sunlight is not recommended for the preservation of unprocessed and unexposed films, as it can lead to unwanted photo-degradation due to UV radiation.
Step-by-step explanation:
Guidelines for storage of unprocessed and unexposed films include keeping films away from radiation sources, storing them in a cool, dry place, and ensuring proper packaging and sealing. However, storing films in direct sunlight is not recommended because UV radiation from sunlight can cause photo-degradation. Similar to how photographic film detects ionizing radiation for medical and dental X-rays, the film's emulsion can be chemically altered by radiation exposure. As radiation can expose photographic film, proper storage is essential to prevent unwanted exposure and preserve the film's integrity.
The guidelines for storage of unprocessed and unexposed films include keeping films away from radiation sources, storing films in a cool, dry place, and ensuring proper packaging and sealing. However, storing films in direct sunlight is not recommended. Sunlight contains UV radiation which can cause damage to the film. UV radiation can lead to photo-degradation and can impact the quality of the images recorded on the film.