What is the value of $pCO_2$ in atmospheric air,alveoli,and tissues respectively?

  • A
    $0.3 \; mm \; Hg, 40 \; mm \; Hg$ and $95 \; mm \; Hg$
  • B
    $95 \; mm \; Hg, 40 \; mm \; Hg$ and $159 \; mm \; Hg$
  • C
    $45 \; mm \; Hg, 0.3 \; mm \; Hg$ and $40 \; mm \; Hg$
  • D
    $0.3 \; mm \; Hg, 40 \; mm \; Hg$ and $45 \; mm \; Hg$

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