Which of the Following Is a Correct Description of Direct

Multiple Choice

Which of the following is a correct description of direct T cell recognition of allogeneic MHC molecules by graft recipients?

A) Recipient T cells recognize soluble donor MHC molecules shed from the graft cells.
B) Recipient T cells recognize peptides derived from allogeneic MHC molecules that are bound to the recipient's own MHC molecules on recipient antigen presenting cells.
C) Recipient T cells recognize intact allogeneic MHC molecules on graft cells,without the need to processing those MHC proteins into peptides and presenting them on self-MHC molecules.
D) Donor T cells in the graft recognize recipient peptides bound to recipient MHC molecules.
E) Recipient T cells act as antigen presenting cells to donor T cells.