The human body has three main lines of defense against pathogens, or disease-causing agents. The first line of defense includes barriers, the second line is the inflammatory response, and the third line is the immune response. Which of the following is included in the second line of defense?

A) skin, mucus, and hair

B) white blood cells, including basophils and neutrophils

C) red blood cells and blood plasma

D) lymphocytes, including T-cells and B-cells