At the Beginning of 2017, a Song Sparrow Population Had

At the beginning of 2017, a song sparrow population had 131 members.In the previous year, 21 birds were born and 32 birds died.Also in the previous year, 5 birds immigrated into the population and 9 birds emigrated from it.Which solution to the population growth equation, N_t = N₀ + (B - D) + (I - E) , is correct for this set of data?

A) N_t = 131 + (21 - 5) + (32 - 9) N_t = 170
B) N_t = 131 + (32 - 5) + (21 - 9) N_t = 170
C) 131 = N₀ + (21 - 32) + (5 - 9) N₀ = 146
D) N_t = 131 + (21 - 32) + (5 - 9) N_t = 116
E) 131 = N₀ + (21 - 5) + (32 - 9) N₀ = 92

Correct Answer:

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