The Question Below Refers to the Following Situation

The question below refers to the following situation:
A researcher is interested in the relationship between political party affiliation (Democrat Or Republican) and support for a woman's right to choose (Pro-Choice) . In order to do this She uses a standardized measure for determining support for Pro-Choice. The higher the Person scores on the measure, the greater is his or her support for Pro-Choice.
If the researcher claims a significant difference between groups, when in fact none exists:

A) a Type 1 error has been made.
B) a Type 2 error has been made.
C) the null hypothesis was correctly retained.
D) the research hypothesis was correctly rejected.