Answer:
I believe the correct answer here would be A. D comes close, but Starbuck's 'rule' is more of a request rather than an outright ban, as the open letter on their website states: "First, this is a request and not an outright ban. Why? Because we want to give responsible gun owners the chance to respect our request—and also because enforcing a ban would potentially require our partners to confront armed customers, and that is not a role I am comfortable asking Starbucks partners to take on."
