Find the Quotient Using Long Division $\frac { 6 m ^ { 3 } + 25 m ^ { 2 } - 21 m + 20 } { m + 5 }$

Multiple Choice

Find the quotient using long division.
- $\frac { 6 m ^ { 3 } + 25 m ^ { 2 } - 21 m + 20 } { m + 5 }$

A) $6 m ^ { 2 } - 5 m + 4$
B) $m ^ { 2 } + 6 m + 7$
C) $m ^ { 2 } + 5 m + 6$
D) $6 \mathrm {~m} ^ { 2 } + 5 \mathrm {~m} + 4$