All of the following are weaknesses or potential weaknesses in the official's argument EXCEPT: A. The high quality of hospitals in the United States is not a factor affecting the public's vulnerability to infectious disease. B. Whether or not the critics are disloyal has no bearing on whether or not they are wrong. C. The Europeans that the official cited are a demographically narrow sample, overwhelmingly composed of wealthy males over the age of fifty. D. The average life span of US citizens is determined not only by deaths due to infectious diseases but also by deaths due to all other causes. E. Comparing the United States to all UN member nations does not address the concern that the US is behind other advanced industrialized nations in a particular way.