Two flasks A and B have equal volumes. Flask A contains $H_2$ at $27^{\large\circ}C$ while B contains equal mass of $C_2H_6$ at $627^{\large\circ}C$. In which flask and by how many times are molecules moving faster ? Assume ideal gas nature for both .

Question

$(a)\;2.237 : 2\qquad(b)\;2.237:1\qquad(c)\;2.237:3\qquad(d)\;2.237:4$