In a database, some students are taking Programming and networking modules in the Information Technology $($IT$)$ department, and they are taking Business Management and Business communication modules in the Business Studies department in a single semester. However, some students registered only for IT department modules. Which one of the following diagram is the best to use to show this information?

Group of answer choices

A$.$ Analysis diagram

B$.$ Comparison diagram

C$.$ Relational diagram

D$.$ Venn diagram