单选题
58. It is with sincere regret that I will not be able to attend the director's lecture.
For each response below, please indicate which of the original messages it would best reply to (A or B), based entirely on the style of communication. A. Dear fellow museum patron, it is with great delight to announce that our director will be presenting his latest lecture this month. B. To whom it may concern, our museum director is going to be lecturing to a limited number this month. If this interests you, let us know.