What am I missing to enable feedback using a CSV import for my questions?

Hello,

I am building my first test title. I'm importing my True/False and MC questions. Looking at help and the necessary format of CSV, I'm trying the following for a true/false question:

TFGeneral1,True/False,Today is Thursday,2,1,TRUE,,FALSE,Today is in fact Thursday

I'm expecting no feedback for the right answer and "today is in fact Thursday" when they choose false.

What am I missing?

By the way, my import source is an excel spreadsheet saved as CSV.

Thanks in advance.