【单选题】

In this section you will hear everything ONCE、ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet.

Questions 1 to 5 are based on an interview.At the end of the interview you will be given I0 seconds to answer each of the following five questions. Now listen to the interview. According to Samantha Heller, people tend to eat milk chocolate becauseA．it is less bitter than dark chocolate.
B．it is more healthy than dark chocolate.
C．it has special flavor with many nutrients.
D．it is less expensive than dark chocolate.