22. For a 2D monatomic ideal gas, which of the following statements is true? (A) The probability density function of finding particles of the velocity of = is not only lincarly proportional to the Boltzmann factor but also linearly proportional to y. (B) The probability density function of finding particles of the speed of v is only linearly proportional to the Boltzmann factor (C) The probability density function of finding particles of the speed v is not only linearly proportional to the Boltzmann factor but also lincarly proportional to v. (D) The probability density function of finding particles of the speed of v is not only linearly proportional to the Boltzmann factor but also linearly proportional to v2. (E) None of the above is true.