1 . z=1-i1+i

• A. $0$
• B. $-i$
• C. $-1$
• D. $1$

Answer: Option A

Explanation:

2 . 1-i1+i

• A. $0$
• B. $1$
• C. $\sqrt{2}$
• D. $i$

Answer: Option B

Explanation:

3 . z=1-i1+i

• A. $0$
• B. $-i$
• C. $-1$
• D. $1$

Answer: Option A

Explanation:

4 . z=1-i1+i

• A. $0$
• B. $-i$
• C. $-1$
• D. $1$

Answer: Option C

Explanation: