Use the Distributive Property to Write the Sum as a Product

Multiple Choice

Use the distributive property to write the sum as a product.
- $( - 1 ) \cdot 6 + ( - 1 ) \cdot \mathrm { c }$

A) $1 ( 6 + c )$
B) $- 1 ( 6 c )$
C) $- 1 ( 6 - c )$
D) $- 1 ( 6 + c )$