I ran a survey containing a multiple choice question (i.e. you can only select 1 of 5 options; the options are considered nominal variables). This survey was completed by 2 different groups (no repeats). There were 1600 responses from the first group, and 600 responses from the second group.
I would like to show that there is no significant difference in how the two groups answered the multiple choice question. For instance, the number of people in Group 1 who selected options 1, 2, 3, 4 and 5 was not significantly different from Group 2.
What statistical test should I use?