Solve Check for Extraneous Solutions $$3 x ^ { 1 / 2 } - 5 = 4$$

Multiple Choice

Solve. Check for extraneous solutions.
- $$3 x ^ { 1 / 2 } - 5 = 4$$

A) $\{ 81 \}$
B) $\{ \sqrt { 3 } \}$
C) $\{ 9 \}$
D) $\{ 3 \}$