Factor the Expression Completely $10 x ^ { 2 } + 5 x ^ { 3 }$

Multiple Choice

Factor the expression completely. $10 x ^ { 2 } + 5 x ^ { 3 }$

A) $\quad 5 x ^ { 2 } ( 2 - x )$
B) $\quad 5 x ^ { 2 } \left( 2 + x ^ { 2 } \right)$
C) $\quad 5 x ^ { 2 } ( 3 + x )$
D) $\quad 5 x ^ { 2 } ( 2 + x )$