Simplify the radical expression. which is the true correct answer

Question

square root 405
(1 point)
Responses

5 times square root 9
Image with alt text: 5 times square root 9

9 times square root 5
Image with alt text: 9 times square root 5

negative 9 times square root 5
Image with alt text: negative 9 times square root 5

45

Answer 1

9 times square root 5