【单选题】

·You will hear part of an interview between head of LeoBurnettEntertainment and an interviewer.·For each question 23—30, mark one letterA,B、or

C、for the correct answer.·You will hear the recording twice. What is the proper length of footage for successful brand placements
A、As long as possible.B、As long as it can effectively deliver a message in a credible manner.
C、
A、two-minute dip.