Determine the output

What will be the output of the given snippet of code?

import re

Flat = "Flat Number B101 # Oceanus Freesia"

x = re.sub(r'#.*$', "", Flat)
print ("Address : ", x)

Options

1. Error
2. (‘Address : ‘, ‘Flat Number B101 ‘)
3. Flat Number B101 # Oceanus Freesia
4. Address : Flat Number B101