题目内容：
根据下面材料，回答题：The old idea that child prodigies(神童）"burn themselves" or "overtax their brains" in the ear-ly years, therefore, are prey to failure and (at worst)mental illness is just a myth. As a matter of fact,the outstanding thing that happens to bright children is that they are very likely to grow intobright adults.
To find this out,1,500 gifted persons were followed up to their thirty-fifth year with these re-suits.
On adult intelligence tests, they scored as high as they did as children. They were, as a group,in good health, physically and mentally. Eighty-four percent of their group were married and seemedcontent with their life.
About 70 percent had graduated from colleges, though only 30 percent had graduated with honors. A few had even flunked out (退学) , but nearly half of these had returned to graduate.
of the men,80 percent were in one of the professions or in business, managers or semi-profes-sional jobs. The women who had remained single had offices, business, or professional oceupatians.The group had published 90 books and 1,500 articles in scientific, scholarly, and literary maga-zines and had collected more than 100 patents(专利权).
In a material way they didn't do badly either. Average income was considerably higher among thegifted people, especially the men, than for the country as a whole, despite their comparative youthwhen last surveyed.
In fact, far from being strange, maladjusted(难以适应) people locked in an ivory tower, most of the gifted were turning their early promises into practical reality.
The statement that child prodigies" burn themselves" or"overtax their brains" are prey to failure is_________. A．exactly reasonable
B．doubted by the author
C．an idea of old men
D．a belief of the author
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