what is the answer

2) At elevated temperatures, methylisa lisonitrile (CH3NC) isomerizes to acetonitrile (CH3CN): CH3NC (8) - CH3CN (g) The reaction is first order in methylisonitrile. The attached graph shows data for the reaction obtained at 198.9 .C. 5.2 5.0 4.8 In pressure, CHNC 3.4 0 10,000 20,000 30,000 Time (s) The rate constant for the reaction is s-1. A) -5.2 x 10-5 B) +5.2 x 10-5 C) +6.2 D) -1.9 x 104 E) +1.9 * 104