Which of the following correctly tells about population density at time t+1?

• A. Nt + 1 = Nt + [(B + I) – (I + E)]
• B. Nt + 1 = Nt + [(B + I) – (D + E)]
• C. Nt + 1 = Nt + [(B + D) – (B + E)]
• D. Nt + 1 = -Nt + [(B + I) – (D + E)]