What Might Occur If the Cytomegalovirus (CMV)MHC I Receptor Analog

What might occur if the Cytomegalovirus (CMV) MHC I receptor analog protein was mutated? (Select all that apply)

A) Increased NK cell attack of CMV-infected cells
B) Decreased NK cell attack of CMV-infected cells
C) Transmission of an increased activation signal through the activating ligand to activating receptor pathway
D) Transmission of a decreased activation signal through the activating ligand to activating receptor pathway
E) No change would be expected