A gaseous mixture contains 0.570 bar of H2(g), 0.499 bar of N2(g), and 0.112 bar of Ar(g). Calculate the mole fraction of each of these gases. Which of the following options correctly represents the mole fraction of H2(g), N2(g), and Ar(g) respectively?
A) 0.570, 0.499, 0.112
B) 0.499, 0.570, 0.112
C) 0.112, 0.570, 0.499
D) 0.570, 0.112, 0.499