单选题 According to the following passage, which of the following statements is true of international comparisons of overall fat intake?

• (A) They provide a reasonable indicator of the health benefits of polyunsaturated fats.
• (B) They tend to conflate too many factors to provide an effective argument against reducing overall fat intake.
• (C) They are rife with subtleties too complex for most nutritionists to be able to understand properly.
• (D) They correctly tend to indicate the necessity for reducing overall fat intake reduction in affluent societies.
• (E) They tend to lend too much attention to non-dietary causes of coronary heart disease.