The demand curve for the new computer game, Rock and Roll Trivia, is given as follows: Q = 200 - 5P - .1Pc - .5Pd + .2A – 0.5Iwhere P is the price of the game Pc is the price of a computer Pd is the price of a diskette A is the level of advertising I is the level of incomeSuppose P = 10, Pc = 100, Pd = 2, A = 5, and I = 50. What is the income elasticity of demand?A) 0B) -23/5C) 1D) -5/23E) none of the abovePlease explain your answer