Refer to the figure showing an immune response to an antigen. 
The cell labeled "B" is a(n) _______ cell, which _______.
A) plasma cell; contributes to a primary immune response
B) T-helper cell; binds to antigen‒MHC complexes in a primary immune response
C) B lymphocyte; binds to antigen‒MHC complexes presented by macrophages
D) effector B cell; provides cells in a secondary immune response
E) memory cell; secretes antibodies in a primary immune response
Correct Answer:
Verified
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