Question: In the technique of analysis by injection in flow: 
 Options:  <1> A relatively large volume of sample is injected into the system, obtaining signals at steady state. <2> A small volume of sample whose integrity is maintained by segmentation with air bubbles is introduced. <3> The sample maintains its integrity throughout the process as it is available in separate containers. <4> The responses obtained have a peak shape whose height depends on the concentration of the sample. <5> The main difficulty lies in the slowness of the measures.
4