Multiply the Polynomials and Simplify $\begin{array} { r } x ^ { 2 } + 5 x - 6 \\\times \quad 3 x + 4 \\\hline\end{array}$

Multiple Choice

Multiply the polynomials and simplify. $\begin{array} { r } x ^ { 2 } + 5 x - 6 \\\times \quad 3 x + 4 \\\hline\end{array}$

A) $3 x ^ { 3 } + 19 x ^ { 2 } + 5 x - 6$
B) $3 x ^ { 3 } + 4 x ^ { 2 } + 2 x - 24$
C) $3 x ^ { 3 } + 19 x ^ { 2 } + 2 x - 24$
D) $3 x ^ { 3 } + 4 x ^ { 2 } + 20 x - 6$
E) $3 x ^ { 3 } + 20 x ^ { 2 } - 6$