19 chess players take part in a tournament. Every player plays twice with each of his opponents. How many games are to be played?	Choose the correct choice from the following:  A) 286  B) 342  C) 422  D) 540  E) 618

Rationale: "2 * 19 c 2 = 2 * 171 = 342 the answer is b ."
Answer: B