According to the passage, explanations of artistic production based on determinism were unthinkable to Watteau admirers for which one of the following reasons? A. If such explanations were widely accepted, too many people who would otherwise have admired Watteau would cease to appreciate Watteau's works. B. If such explanations were adopted, they would make it difficult for Watteau admirers to explain why Watteau's works were purchased and admired by foreigners. C. If such explanations were correct, many artists who, like Watteau, considered themselves French would have to excluded from histories of French art. D. If such simple explanations were offered, other more complex arguments concerning what made Watteau's works especially charming would go unexplored. E. If such explanations were true, Watteau's works would reflect a "Flemish" sensibility rather than the especially "French" one these admirers saw in them.