Which of the following statements is a false or incorrect statement?

A.
The lymphoid organs where lymphocytes become immunocompetent are called primary lymph organs. All other lymphoid organs are referred to as secondary lymphoid organs.

B.
T cells and B cells become activated when they bind with recognized antigens.

C.
It is our genes, not antigens, that determine what specific foreign substances our immune system will be able to recognize and resist.

D.
After becoming immunocompetent, the naive T cells and B cells are exported to the bone marrow where the encounters with antigens occur.