Which compound sentence establishes an appropriate relationship between clauses? a. the contestants on the game show were chosen at random, so it was impossible to know who would win. b. the contestants on the game show were chosen at random, yet it was impossible to know who would win. c. the contestants on the game show were chosen at random; however, it was impossible to know who would win. d. the contestants on the game show were chosen at random; otherwise, it was impossible to know who would win.