One Hypothesis for Why Faces with Normal Features Are Rated

One hypothesis for why faces with normal features are rated as attractive is that normal means healthy. The research finding that presents the greatest challenge to this hypothesis is the finding that

A) even infants prefer to look at faces judged attractive by adults.
B) judgments of facial attractiveness are similar across cultures.
C) ratings of attractiveness did not correlate reliably with health.
D) people do not agree on which faces are attractive.