In Certain Liver Cancers, Patients Show an Overexpression of Tregs

In certain liver cancers, patients show an overexpression of Tregs.The result of this is most likely to

A) improve the patient's prognosis because this will increase the body's immune response against the cancer.
B) lead to a poor prognosis because it could reduce the body's immune response against the cancer.
C) cause the cancer to shrink rapidly because of an enhanced activation of the cellular immune response.
D) activate cytotoxic T cells, which reduce the cancer by attacking and killing the cancer cells.
E) cause an autoimmune disease because of a lack of recognition of self as the Tregs attack the cancer cells.