Q: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Fact1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens., Fact2: Some of the antibodies, antophospholipid antibodies, cause blood clots., Question: some proteins do what to antigens to cause blood clots (A) edema (B) Toxins (C) H 2 O (D) bind (E) work (F) fusion (G) HIV (H) damage
A:
D