A nurse is reinforcing information with a nursing colleague about sentinel events. Which of the following statements by the nursing colleague indicates an understanding?

"An example of a sentinel event is administering a prescribed sedative to a client for insomnia."

"An example of a sentinel event is administering incompatible blood products to a client."

"An example of a sentinel event is administering client medications 30 minutes late."

"An example of a sentinel event is documenting vital signs at the wrong time in the client's electronic health record."