Human fetal hemoglobin has:

Given below are two statements:
Statement $I$: The relationship between $HbO_2$ saturation and oxygen tension $(pO_2)$ is called the oxygen-dissociation curve.
Statement $II$: The oxygen dissociation curve shifts towards the right due to a decrease in $ppCO_2$ and a decrease in temperature.
In the light of the above statements,choose the most appropriate answer from the options given below.

The amount of oxygen transported by one litre of blood under strenuous condition is approximately (in $ml$)

Which is the respiratory pigment or oxygen carrier in frogs?

How much higher is the affinity of carbon monoxide for hemoglobin compared to oxygen (in $\times$)?

Select the correct option for the transport of $O_2$. (Plasma : RBCs)