Nula Is Conducting a Study in Which One Group Is

Multiple Choice

Nula is conducting a study in which one group is exposed to loud music while completing a writing assignment and the other group has quiet conditions.Further,Nula examines the effect of gender within these groups.Therefore,she is examining the effects of both noise and gender on participants' performance on a writing task.Which of the following reflects the type of variables present in this study

A)  one independent variable and two dependent variables 
B)  one control variable and two independent variables 
C)  one independent variable, one control variable, and one dependent variable 
D)  two independent variables and one dependent variable