What is this ornamental grass?

I bought a pot of ornamental grass at a yard sale, but don't know what it is. It is supposed to grow to 6' tall.
Any ideas what it is?
Cortaderia selloana has been suggested. Would that be a good guess?

 

Cortaderia very doubtful. It's more like the variegated Arundo donax, Giant Reed. If so, it should get leaves to 3 cm or more wide.

 

Thanks for that thought, Tony.
However, I doubt A. donax because of the size.
"Mine" should grow to just under 2 meters, whereas A. donax tops at about 6 meters.

 

Miscanthus sinensis 'Cabaret' produces large leaves.

 

Thanks, Ron B.
Miscanthus sinensis 'Cabaret' looks very promising.
I'll stick with that unless I get evidence to the contrary.