Researchers studied how the daily intake of caffeine affects the relative risk of developing a sleep disorder. The graph shows the results of their study.
A relative risk of more than 1.0 means that a person who consumes caffeine is more likely to develop the sleep disorder compared to a person who consumes no caffeine.
Which conclusion can be made from this graph?
Consuming 300 mg300\text{ mg}300 mg of caffeine per day does not increase the risk of the sleep disorder.
Consuming above 300 mg300\text{ mg}300 mg of caffeine per day reduces the risk of the sleep disorder.
Consuming caffeine has little effect on the risk of the sleep disorder.
Consuming any amount of caffeine increases the risk of the sleep disorder.