Task: Question Answering
Input (English): Question: What happens to the kinetic parameters of a michael enzyme in the presence of a competitive inhibitor ?: 
 Options:  <1> Vmax decreases, Km increases. <2> Vmax decreases, Km decreases. <3> Vmax decreases, Km does not change. <4> Vmax does not vary, Km increases. <5> Vmax does not vary, Km decreases.
Output (English): 4