AND THE ANSWER IS . . .
The correct answer is "B" - Ovomucoid.
Discussion:
Hen’s egg allergens are well characterized. The four noted above are the major allergens. The dominant one is Ovomucoid, and children who fail to outgrow egg allergy often have high titer IgE antibodies against this allergen. Ovomucoid is resistant to heat treatment and also to digestive enzymes. These qualities may be responsible for the correlation between IgE antibodies to this allergen and persistence of allergy to egg into adulthood.