Hi

I got thru for PhD with assistantship and tution waiver. This assistantship is given by a professor who served my mentor during M.S thesis. Now in my I-20 the information tells type of fund as "assistantship and tution waiver".
Now in the DS-160 form, do I put sponsor as the Department / the professor??
Please help.
I need to get my visa work done ASAP
Best!