The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A type of immediately occurring reaction in which antigens combine with antibodies already attached  to the surface of mast cells and basophils is called:   (A) Type I hypersensitivity   (B) Type II hypersensitivity   (C) Type III hypersensitivity   (D) Type IV hypersensitivity
['(A) Type I hypersensitivity <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Type I hypersensitivity \n (B) Type II hypersensitivity \n (C) Type III hypersensitivity \n (D) Type IV hypersensitivity <> possible answers', '  A type of immediately occurring reaction in which antigens combine with antibodies already attached \nto the surface of mast cells and basophils is called: <> context@']