Which of the following are "professional" antigen-presenting cells, which are pertinent to the major histocompatibility complex?

A) Macrophages, dendritic cells, and B cells
B) Mast cells, dendritic cells, and B cells
C) Macrophages, dendritic cells, and T cells
D) Macrophages, natural killer cells, and T cells
E) Mast cells, B cells, and T cells