A Cell Expressing $CD3^+, CD25^+$ , and FoxP31 Is a
A) $(\gamma\gamma)$

A cell expressing $CD3^+, CD25^+$ , and FoxP31 is a

A) $(\gamma\gamma)$ T cell
B) Helper T cell
C) Cytotoxic T cell
D) Regulatory T cell
E) Natural killer T cell