In which of the following vertebrate group/groups,heart does not pump oxygenated blood to different parts of the body ?

In which of the following group heart does not pump oxygenated blood to different parts of the body?

Veins carry blood from heart to different parts of the body.

In which of the following, heart pump mixed blood

Which of the following statement (s) is (are) true about heart? (i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs (ii) Left ventricle pumps oxygenated blood to different body parts while right ventrivle pumps deoxygenated blood to lungs (iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts (iv) Right atrium receives deoxygenated blood from different part of the body while left ventricle pumps oxygenated blood to dofferent parts of the body