Which of the following statements best describes the effect of a mutation that alters the structure of the a factor so that it no longer binds to the corresponding receptor on α cells?

A) The α cells will fail to initiate the shape changes necessary for mating.
B) The α cells will fail to secrete the α factor.
C) The a cells will fail to initiate the shape changes necessary for mating after binding α factor.
D) The a cells will mate with other a cells rather than α cells.