challenge: Who are the musicians featured on Charles Lloyd's album 'Of Course, Of Course'?
  
  A. McCoy Tyner, Reggie Workman, and Elvin Jones
  B. Gábor Szabó, Ron Carter, and Tony Williams
  C. Herbie Hancock, Wayne Shorter, and Tony Williams
  D. Gábor Szabó, Ron Carter, and Elvin Jones
  Answer: 