According to the current body of scientific research, what effect does exercise have on an athlete's vitamin requirements?

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The current body of scientific research suggests that exercise increases the need for vitamins only slightly, but not enough to warrant vitamin supplementation. A balanced diet that includes plenty of fruits and vegetables should provide sufficient vitamins for athletes. Option A and D are incorrect because research does not support the need for substantial vitamin supplementation. Option B is incorrect because while exercise does increase vitamin requirements, supplementation is not always necessary.

According to the Current Body of Scientific Research, What Effect