Mark the correct one where the values of partial pressure of gases is one and same

• A

  p${\mathrm{CO}}_2$ in the alveoli and p${\mathrm{O}}_2$ resting tissues

• B

  p${\mathrm{O}}_2$ in the deoxygenated blood and p${\mathrm{CO}}_2$ resting tissues

• C

  p${\mathrm{O}}_2$ in the alveoli and p${\mathrm{O}}_2$ in the oxygenated blood

• D

  p${\mathrm{CO}}_2$ in the carotid artery and p${\mathrm{CO}}_2$ in the pulmonary artery