If $N$ is the population density at time $t$,then at time $t + 1$,the density is calculated as . . . . . . .

  • A
    $N_{t+1}=N_t+[(B+I)+(D+E)]$
  • B
    $N_{t+1}=N_t+[(B-I)+(D-E)]$
  • C
    $N_{t+1}=N_t+[(B+I)-(D+E)]$
  • D
    $N_{t+1}=N_t-[(B+I)-(D+E)]$

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