Cute, but property rights trump your 2A rights...deal with it.
FACT:You can carry anywhere you want, but when the property owner asks you to take your gun and leave, you must...your 2A rights have just been trumped. Feel free to contact the property owner(WM) in order to be allowed back on their property with your firearm.
You should have chosen D: None of the above. Thanks for playing.
except that a business owners rights triumph 2A rights. the only way to get this to change is to have people stop patronizing the business.