Bacteria in a petri dish were sprayed with an experimental disinfectant. The number of bacteria (A) in the petri dish t seconds after being sprayed can be modeled by the functionA(t) = 1000(0.8)*. The instantaneous rate of change at two seconds is -143. What does the instantaneous rate of change mean in this context? O At two seconds, the number bacteria decreases by 143 bacteria per second. O At two seconds, the number bacteria increases by 143 bacteria per second. O During the first two seconds, the number of bacteria reduces by 143 bacteria per second. O During the first two seconds, the number of bacteria increases by 143 bacteria per second.

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