Find the Sum or Difference $$( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$$

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $$( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$$

A) $- 4 + 21 \mathrm { i }$
B) $2 + 21 \mathrm { i }$
C) $- 4 - 3 \mathrm { i }$
D) $- 10 + 11 \mathrm { i }$