Consider the following four statements (a–d) regarding kidney transplant and select the two correct ones out of these – <br> (a) Even if a kidney transplant is proper the recipient may need to take immunosuppresants for a long time <br>(b) The cell-mediated immune response is responsible for the graft rejection <br> (c) The B-lymphocytes are responsible for rejection of the graft <br> (d) The acceptance or rejection of a kidney transplant depends on specific interferons <br> The two correct statements are –