Which of the Following Is a Situation Where an NK

Which of the following is a situation where an NK cell can recognize a virally infected cell and kill it?

A) The plasma membrane contains viral glycoproteins.
B) The NK cell recognizes the MHC-I complex on the surface.
C) The infected cell displays peptides on MHC-I complexes on its surface
D) The infected cell has a reduced amount of MHC proteins on its surface.
E) The NK cell recognizes the virus host cell receptor on the surface of the cell.