GRE Reading Comprehension: ETS-GRE阅读ETS - 431H6S51JE87512S7

According to the passage, the Handlins have NOT argued which of the following about the relationship between racial prejudice and the institution of legal slavery in the English colonies of North America? A. Racial prejudice and the institution of slavery arose simultaneously. B. The source of racial prejudice was the institution of slavery. C. Although existing in a lesser form before the 1660's, racial prejudice increased sharply after slavery was legalized.