Here is a goal: To decide whether to discard dark cooking oil,

Which way makes more sense to accomplish this goal?

OPTIONS: (I) smell the oil for a rancid smell, check to see if it is too thick, and throw away oil that is too dark or foamy.. (II) smell the oil for a flowery smell, check to see if it is too thick, and throw away oil that is too dark or foamy..
(I)