Multiply the Radical Expressions $2 \sqrt { 5 } \cdot 2 \sqrt { 15 }$

Multiple Choice

Multiply the radical expressions. $2 \sqrt { 5 } \cdot 2 \sqrt { 15 }$

A) $20 \sqrt { 3 }$
B) $4 \sqrt { 3 }$
C) $8 \sqrt { 5 }$
D) $100 \sqrt { 2 }$