Listeriа mоnоcytоgenes is а psychrotrophic orgаnism with an optimal growth temperature of 30°C to 37°C but a growth range from 1°C to 45°C. If a culture of L. monocytogenes was placed inside a refrigerator (4°C) at time X, which of the following figures below best depicts the change in its population size (no. of viable cells) over time?