If you are asked to judge the example elevator pitch provided in lesson five, which of the following statement do you think can truly point out its merits?
选项：

A:The speaker firmly keeps the objective of becoming a teaching assistant throughout his pitch.;
B:The speaker strongly supports it with examples that he is more achieved than the other competeting students.;
C:The speaker tactfully uses his writing pieces on his personal homepage as a hook to grab the audience’s attention.;
D:The speaker clearly addresses the benefits he can bring or the values he can add to the class.