Which Statement About Vertebrate Circulatory Systems Is False

Which statement about vertebrate circulatory systems is false?

A) In fish,oxygenated blood from the gills returns to the heart through the left atrium.
B) In amphibians,blood from the systemic tissues enters the heart through the right atrium.
C) In reptiles,the blood in the pulmonary artery has a lower oxygen content than the blood in the aorta.
D) In birds,the pressure in the aorta is higher than the pressure in the pulmonary artery.
E) In mammals,deoxygenated blood leaves the heart through the pulmonary artery.