M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:	The advantage of coupling gas chromatography followed by mass spectrometry over simply mass spectrometry is that

the GC-MS is capable of separating individual analytes prior to fragmentation in the MS

the GC-MS is capable of fragmenting all the analytes at once prior to analysis on the GC

the GC-MS requires less time to operate than the GC alone

neither technique provides useful information on its own; only together can their data be put to any use