2. If $\mathrm { i } ( 1 - z ) = 1$, then $z + \bar { z } =$ A. $- 2$ B. $- 1$ C. $1$ D. $2$
When answering multiple choice questions, after selecting the answer to each question, use a pencil to blacken the corresponding answer number on the answer sheet. If changes are needed, erase cleanly with an eraser before selecting another answer number. When answering non-multiple choice questions, write your answers on the answer sheet. Answers written on this test paper are invalid.
2. If $\mathrm { i } ( 1 - z ) = 1$, then $z + \bar { z } =$\\
A. $- 2$\\
B. $- 1$\\
C. $1$\\
D. $2$