What Is the Likely Phylogenetic Explanation for the Crossing of Food

What is the likely phylogenetic explanation for the crossing of food and air pathways in humans?

A) A connection between the two previously separated pathways evolved to allow for an alternative air intake in case of a "stuffy nose."
B) Lungs evolved from pouches in the digestive system.
C) Access to odor receptors in the nose allowed for assessing food quality before swallowing.
D) A connection between both pathways allowed for a more efficient swallowing mechanism.