What will accomplish to run in spatial-mode instead of browser-mode?

You want Nautilus to run in spatial-mode instead of browser-mode. What will accomplish this?

A.
Edit the appropriate XML file in ~/.gconfd/*, locate the "always_use_browser" entry and set the value to false.

B.
Set the "always_use_browser" key at the appropriate location in the gconf database to false.

C.
Create an environment variable called NAUTILUS_ALWAYS_USE_BROWSER and set its value to "true"

D.
Edit ~/.nautilus/nautilus.conf and set the "always_use_browser" entry to false.