The phrase "curious blind spot" can best be interpreted as referring to which one of the following? A. some biographers' persistent inability to appreciate what the author considers a particularly admirable equality B. certain writers' surprising lack of awareness of what the author considers an obvious discrepancy C. some writers' willful refusal to evaluate properly what the author considers a valuable source of information about the past D. an inexplicable tendency on the part of some writers to undervalue an artist whom the author considers extremely influential E. a marked bias in favor of a certain painter and a concomitant prejudice against contemporaries the author considers equally talented