Data for a Pulsed Molecular Beam Experiment at a Temperature

Data for a pulsed molecular beam experiment at a temperature of 297 K is shown below: Which are the following are probably true about the sample?1. The sample consists of two different molar mass molecules.2. The sample has a lower molar mass than ammonia (avg is 490 m/s) .3. The sample has a higher molar mass than ammonia (avg is 490 m/s) .4. The sample consists of molecules with the same molar mass.5. The average velocity is near 200 m/s.

A) 1 and 5 only
B) 3, 4 and 5 only
C) 2, 4 and 5 only
D) 4 and 5 only
E) 2 and 5 only