Question: A package of documents needs to be sent to a given destination, and delivery within one day is important. To maximize the chances of on-time delivery, three copies of the documents are sent via three different delivery services. Service A is known to have a 90% on-time delivery record, service B has an 88% on-time delivery record, and service C has a 91% on-time delivery record. What is the probability that at least one copy of the documents will arrive at its destination on time?