A Ssume All Variables Represent Nonnegative Real Numbers $\sqrt{15} \cdot \sqrt{48}$

Multiple Choice

A ssume all variables represent nonnegative real numbers.
- $\sqrt{15} \cdot \sqrt{48}$

A) $20 \sqrt{3}$
B) $-12 \sqrt{5}$
C) $-20 \sqrt{3}$
D) $12 \sqrt{5}$