I did n't have to play any more CDs , but I went back to the MP3 player later and managed to mute the cable - change noise . So at least there was a learning curve . The microphone was difficult . I expect there are better ways to hold and speak into it , as I struggled to make myself understood .

Choose from: a). Making myself understood while speaking . b). Holding the microphone correctly . c). No longer having to play any more CDs . d). None of the above choices .
Q: Which of the following was not a part of the learning curve ?
c).