X. Pneumonia is a widespread constriction of the bronchial airways, resulting to difficulty in breathing. Y. It may be caused by inhalation of substances that can irritate the lungs, such as chemicals and liquids. *

A X is true and Y is false.
B X is false and Y is true.
C X and Y are both true.
D X and Y are both false


X. Stroke occurs when there is damage to the brain caused by a block of blood vessel. Y. Stroke is known as "silent killer" because most of the time, people are not aware of it. *

A X is true and Y is false.
B X is false and Y is true.
C X and Y are both true.
D X and Y are both false.​