Which of the Following Equations Is Correct

Multiple Choice

Which of the following equations is correct?

A) Net income = Shareholders' equity at the end of period t + Shareholders' equity at the beginning of period t (all other things being equal)
B) Net income = Shareholders' equity at the end of period t+1 + Shareholders' equity at the beginning of period t (all other things being equal)
C) Net income = Shareholders' equity at the end of period t - Shareholders' equity at the beginning of period t-1 (all other things being equal)
D) Net income = Shareholders' equity at the end of period t - Shareholders' equity at the beginning of period t (all other things being equal)