Imagine that two groups of neurons (a& b) send their signals to another group of neurons (c) action potentials generated simultaneously by all the neurons of group a lead to a response in c such that a select number of neurons in group c are activated ( number of activated neurons = c1); action potentials generated simultaneously by all the neurons of group b lead to a response in c such that c2 is the number of activated neurons. what might the magnitude of the response be in c if action potentials were generated simultaneously by all the neurons in both groups a & b? can it be bigger than, smaller than, or equal to ( c1+ c2)? why?