A. B-cells
Which type of white blood cells is produced in the thymus and destroys the cell membranes of bacteria are B-cells. These b-cells are also known and called as B lymphocytes. Their function primarily is to create antibodies which combats antigens such as bacteria. They are also responsible for immune regulatory indications –cytokines. In contrast, T-cells are a type of white blood cells that combat any substance from the inside or within the body.