In the 1960s British Psychologist Sir Cyril Burt Published a Study

In the 1960s British psychologist Sir Cyril Burt published a study on separated twins indicating that nature was much more important than nurture in determining intelligence.All of the following statements about Burt's study are true except:

A) it temporarily tipped the balance of informed opinion toward the hereditarian view.
B) it was influenced by the ideas of Galton.
C) it was later found to be deeply flawed and perhaps fraudulent.
D) it introduced new research techniques that have continued to be employed in later twin studies.