Questions 14～16 are based on the following dialogue. You now have 15 seconds to read questions 14～16. According to the lecture, what was the result of Ali’s 1964 fight against Sonny Liston

A．Liston was claimed winner by decision after only two rounds.
B．Ali knocked Liston out in the seventh round.
C．Liston was unable to answer the bell in the ninth round.
D．Ali was proclaimed champion after six rounds.