Find the Sum or Difference $7 i + ( - 3 - i )$

Multiple Choice

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

A) $- 3 + 6 i$
B) $3 - 8 \mathrm { i }$
C) $- 3 + 8 \mathrm { i }$
D) $3 - 6 i$