HMRC Starter Checklist and Student loan

Hi,

I'm due to start a new role next month and have been given a HMRC starter checklist to fill out, since I do not have my P45.

One of the questions is "Did you finish your studies before the last 6 April? " I graduated from my undergraduate degree July 2017, however I went on to take a postgraduate MSc and took a student loan out for this which I finished after last April (finished studies August 2018 and graduated January 2019).

Would I say yes since I finished my undergraduate in 2017 or no? As including postgraduate, my studies finished after last April. Apologies if this is a silly question, I don't want to make a mistake on the form.

Thank you