Which organ is considered as the "Graveyard of $RBCs$" where most of them are destroyed by macrophages?

$A$ person with blood group-$A$ has:

Which of the following is not a granulocyte?

Which $WBC$ act as phagocytes?

Assertion: The regulation of $RBC$ production is accomplished by $FSH$.
Reason: Erythropoietin hormone circulates to red bone marrow where it increases stem cell mitosis and speeds up the development of $RBCs$.

Which one of the following plasma proteins is involved in the coagulation of blood?