Task: Question Answering
Input (English): Question: In capillary electrophoresis, in relation to the electroosmotic flow, it can be stated that: 
 Options:  <1> The flow profile is parabolic. <2> The flow profile is practically flat and / or uniform. <3> You can not know its form and direction. <4> The profile of the flow is always inverted. <5> The profile of the flow is never reversed.
Output (English): 2