Wayrest Case Files 01: The Sixth Tag

Fenn, a porter at the south gate, notices something wrong with a cart: five registered crates but six cargo tags, and a ledger saying the cart left Wayrest three days ago — yet the bottom-right corner of every tag is still intact.
By the rules, each tag has its corner clipped once its crate actually passes through the south gate.
A single-choice puzzle: which conclusion can the evidence and rules actually prove?
Answer (revealed in update 6): B — the departure record does not prove the cart passed through the south gate.
“Departed” in the ledger isn’t enough to show the cart really went through. Whether a crate was stolen, who added the extra tag, or whether the driver was replaced — the evidence can’t tell us yet.
Want to try it yourself? The Wayrest Case Files on this site include a playable version.