Which of the Following Situations Would not Lead to a Claim

Which of the following situations would not lead to a claim for negligence?

A) A customer leaves the store angrily when he was told that the item he wanted is not available
B) A business failed to put out a 'slippery when wet' sign after the floor was cleaned
C) A customer opened a soft drink can and ingested a toxic substance
D) A business left a pipe on the front of the sidewalk next to the restaurant floor