The Eyes Are Protected from Infection by

The eyes are protected from infection by

A) the washing action of the tears and eyelids AND the use of contact lenses.
B) the washing action of the tears and eyelids AND the chemical action of lysozyme.
C) the chemical action of lysozyme AND the use of contact lenses.
D) the use of contact lenses AND the dryness of the eye surface.
E) the dryness of the eye surface AND the chemical action of lysozyme.