Display which category the post is from?

Hi everyone,
This widget is great, does its job well. I was wondering, rather than just displaying the title, how can we also display the specific category it is from? For example, just beneath the title? I have a website for different subjects, and when you can’t tell what category the post belongs to (maths, english, chemistry), it’s much harder for students to navigate!
Let me know,
Cheers.

https://wordpress.org/plugins/recent-posts-widget-extended/