Find the Square Root If It Is a Real Number $\sqrt { 30 - 5 }$

Multiple Choice

Find the square root if it is a real number, or state that the expression is not a real number.
- $\sqrt { 30 - 5 }$

A) 25
B) $\sqrt { 30 } + \sqrt { 5 }$
C) 5
D) not a real number