Psychoneuroimmunology studies the effects of stress on the immune system. Identify the correct statements describing its working:

(A) The Leucocytes within the immune system identify and destroy antigens such as viruses

(B) Stress does not affect natural killer cell cytotoxicity

(C) Stress leads to the production of antibodies

(D) There are several kinds of Leucocytes including the T cells, B cells and natural killer cells

(E) D-cells produce antibodies

Choose the correct answer from the options given below: