Answer:
The pulmonary artery carries De-oxygenated blood from the right ventricle to the lungs; the pulmonary veins carry OXYGENATED blood from the lungs to the left atrium.
Just in case you're wondering what Oxygenated and De-oxygenated mean, Oxygen means filled with/contains Oxygen, whereas De-oxygenated means the opposite: does not contain Oxygen.