"I'm Going to Hold My Breath Until I Die and It

Multiple Choice

"I'm going to hold my breath until I die and it will be all your fault!" shrieked the 6-year-old at her father. The child was physically unable to carry out her threat because

A) she never stopped talking long enough to try to hold her breath.
B) increased CO₂ and hydrogen ion concentration and decreased oxygen concentration stimulate chemoreceptors.
C) decreased CO₂ and hydrogen ion concentration and increased oxygen concentration stimulate chemoreceptors.
D) she could not take in enough oxygen.