Indicate Whether Each of the Following Descriptions Better Applies to the Clonal

Short Answer

Indicate whether each of the following descriptions better applies to the clonal anergy (A), clonal deletion (D), receptor editing (E), or clonal suppression (S) mechanism of immunological self-tolerance. Your answer would be a five-letter string composed of letters A, D, E, and S only, e.g. SADSS.
( ) It involves apoptosis of self-reactive cells.
( ) It is mostly limited to B cells.
( ) It involves regulatory T (T??g) cells.
( ) It involves DNA recombination.
( ) It is limited to central tolerance processes.