Thermodynamics Part 3

Same gas is filled in two vessels of the same volume at the same temperature. If the ratio of the number of molecules is 1:4, then A. The r.m.s. velocity of gas molecules in two vessels will be the same.
B. The ratio of pressure in these vessels will be 1:4.
C. The ratio of pressure will be 1:1.
D. The r.m.s. velocity of gas molecules in two vessels will be in the ratio of 1:4.
Choose the correct answer from the options given below :