Carbon monoxide combines with haemoglobin to form __________

Study the following forms of transport of respiratory gases
A) ${\mathrm{CO}}_2$ as bicarbonates
B) ${\mathrm{O}}_2$ through plasma
C) ${\mathrm{CO}}_2$ as carbamino compounds
D) ${\mathrm{O}}_2$ through $\mathrm{RBC}$
E) ${\mathrm{CO}}_2$ in a dissolved state
Arrange the above in sequence in ascending order based on their percentages.

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

In the given graph curves $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ represent the relation between partial pressure of oxygen $\left({\mathrm{pO}}_2\right)$ and saturation of haemoglobin with oxygen. If curve $\mathrm{A}$ represents the condition of blood in a regular artery then please select the correct statement from below.