USPS: "Is The Correct English On Their Sign?"

I stopped by at the U.S. Post Office this morning and saw this big sign on the wall:

"Metered Mail Customers: IS THE CORRECT DATE ON YOUR METERED MAIL?"

This sentence would've been grammatically correct only if someone was asking if the "correct date" actually read "ON YOUR METERED MAIL".

An analogous sentence would be "Is the apple green?", or "Is the world round?"

I guess someone was trying to say:

1) "Metered Mail Customers: DO YOU HAVE THE CORRECT DATE ON YOUR METERED MAIL?"

or

2) "Metered Mail Customers: IS THE DATE ON YOUR METERED MAIL CORRECT?"

or

3) "Metered Mail Customers: DOES YOUR METERED MAIL HAVE THE CORRECT DATE?"

How did they find the only sentence combination that was not correct and display it prominently where everyone can see it?

I guess you need a governmental committee to achieve a feat like that.