A town's population is 43,875. About 100 people move out of the town each month. Each month, 125 people on average move into town. A nearby town has a population of 45,000. It has no one
moving in and an average of 200 people moving away
every month. In about how many months
will the populations of the towns be equal? Write an equation to model the situation. Then solve the
equation and answer the question,
Which equation models the situation?

A. 125m + 100m + 45,000 = 43,875 + 200m

B. 125m + 100m + 43,875 = 45,000 + 200m

C. 125m - 100m + 45,000 = 43,875 - 200m

D. 125m - 100m + 43,875 = 45,000 - 200m