Which Statement Regarding Temperament Is False

Which statement regarding temperament is false?

A) Researchers found that more babies were categorized as easy than either difficult or slow-to-warm-up.
B) Slow-to-warm-up babies adjust more quickly to new situations than difficult babies do.
C) Over 90% of babies can be easily classified into either the easy, difficult, or slow-to-warm-up styles.
D) Easy babies are predictable when it comes to biological functioning.