PLEASE HELP ASAP The molar mass of two equally sized samples of unknown gaseous compounds is shown below.

Molar Mass Comparison
Gas Molar Mass
X 28 g/mol
Y 44 g/mol

At STP, which describes the density and effusion of both gases?
A. Gas X has a higher density and effuses faster than Gas Y.
B. Gas X has a higher density and effuses slower than Gas Y.
C. Gas X has a lower density and effuses slower than Gas Y.
D. Gas X has a lower density and effuses faster than Gas Y.