[A] : Macrophage is a large amoeboid cell that can engulf, ingest and destroy bacteria, dam- aged cells and worn-out red blood cells. This process is called phagocytosis and is an im- portant part of the body s defence against disease.
[R]: Macrophages are found free (wandering) in the tissues, in connective tissue) as histio- cytes), in the lining of the blood sinusoids of the liver (as Kupffer cells), and in lymphoid tissue. They make up the reticulo-endothelial system.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

A