Paragliders will suffer ultraviolet degradation to the cloth sufficient to compromise safety in which exposure scenario?

• A. 300 hours of flying
• B. 300 hours of total sunlight exposure
• C. whatever sunlight exposure causes noticeable fading of the fabric
• D. some number of hours of total ultraviolet exposure that depends on the intensity of the radiation and the original quality and construction of the fabric

Answer: (C)