A Type I Error Occurs When the Researcher ______, While

A type I error occurs when the researcher ______, while a type II error occurs when the researcher ______.

A) says an effect does not exists when it does; says an effect exists when it does not
B) reject the null when they should not; does not reject the null when the alternative hypothesis is true
C) does not reject the null; does reject the null
D) does not reject the null when the alternative hypothesis is true; rejects the null when they should not have