Quicken: asset class for US treasuries fund?

[IronWing]

I just moved from Money to Quicken and I'm setting up the investment stuff. I hold a mutual fund that invests entirely in short term US treasury bonds. The likely choices for asset class within Quicken are "domestic bonds" and "cash". Thoughts on which asset class would be more appropriate for a treasury bond fund?

 

[Capt Caveman]

Domestic Bond