In the following sentences, select and circle the proper choice, inside of each set o parentheses, so that the sentences will be accurate and logical:

"In a gas chromatogram, the peaks that emerge first will represent compounds that are the (most or least) volatile. Those compounds will also likely have (low or high) boiling points and show the (most or least) interactions with the stationary phase of the GC column. If the emerging peaks are from a non-polar homolog set, the first to emerge will have (lower or higher) molar masses than those emerging later. Heating the GC oven containing the column will likely (increase or decrease) the time before seeing the first peak."