Which of the following is most probably functionally illiterate

A．They made the young people of their time very excited.
B．They attracted a large following wherever they played.
C．They were always pleased with their popularity.
D．No other pop music group had ever played to bigger audience than they did.

A．It was fine example of music for simple singalong songs.
B．Its appeal was not limited to any particular time or group of people.
C．It was simple in form but rich in meaning.
D．It reached a height which other pop music groups had never reached for their lyrics and melodies.