A little girl was playing in the snow one day and found that she was wiping her nose quite often. The "runny nose" that she was experiencing due to the cold temperatures resulted from

A) an insufficient production of mucus.
B) an inadequate supply of blood to the nasal epithelium.
C) the slowed activity of nasal cilia.
D) a buildup of tears in the nasal septum.
E) the inability of the sinuses to drain.