Which Sequence of Numbers Places the Steps of an Allergic

Which sequence of numbers places the steps of an allergic response in the proper order?
1) Allergic symptoms appear.
2) Allergen binds with IgE.
3) IgE combines with mast cell receptors.
4) Mast cells release histamine.
5) Plasma cells are sensitized.

A) 5, 3, 2, 4, 1
B) 1, 4, 5, 2, 3
C) 5, 2, 4, 3, 1
D) 1, 5, 2, 4, 3