At the Beginning of Her Presentation, Delaney Told the Audience

At the beginning of her presentation, Delaney told the audience she would answer questions at the end of her presentation. Jim arrived late and began asking questions during Delaney's presentation. The ideal way for Delaney to handle this is by:

A) answering his questions immediately in order to minimize the distraction.
B) ignoring Jim and refusing to acknowledge his questions from the outset.
C) announcing that she will now answer questions during the presentation.
D) advising Jim and reminding the audience that questions are for the end.