Multiply and Simplify Where Possible $\sqrt { 8 } \sqrt { 20 }$

Multiple Choice

Multiply and simplify where possible. $\sqrt { 8 } \sqrt { 20 }$

A) $10 \sqrt { 10 }$
B) $2 \sqrt { 10 }$
C) $4 \sqrt { 10 }$
D) $10 \sqrt { 2 }$
E) $8 \sqrt { 10 }$