Which of the Following Statements Regarding Control of Respiration Is $P _ { o _ { 2 } }$

Which of the following statements regarding control of respiration is correct?

A) A slight decrease in arterial $P _ { o _ { 2 } }$ ) is a stronger stimulus for increased ventilation than is a comparable decrease in arterial $P _ { o _ { 2 } }$
B) The most important signal for regulating ventilation is the H ion concentration of arterial blood
C) Increased concentrations of lactic acid stimulate ventilation primarily by acting on peripheral chemoreceptors
D) All of the choices are correct
E) None of the choices are correct