In a population of lizards, in a 6-month period, 150 lizards emigrate from the population. In the same 6-month period, 140 lizards immigrate to the population. How
did the population change during the 6-month period? (Assume all other factors did
not change.)
A. The population decreased by 10 lizards.
B. The population increased by 140 lizards.
C. The population increased by 150 lizards
D. The population decreased by 290 lizards