To accomplish this, I created a 'drag and drop into text' question type, and define two columns for it, as shown in the below image:

But the issue here is that, in this case it defines the answer in the particular order/ sequence.
I want that whatever relevant answers choices are there, related to Textbook or digital content, should come in that column and it can be in any sequence.
If I define the choices according to the groups, then it shows both the group choices in different colours. Then the user directly knows the answer choices for each category, as in this case sequence is not important.
Is there any way to make the colour of the choices, in both the groups, same?
Can anyone guide how to do that or is there any other similar question type which I can use for this purpose?